Remove iOS 11 availability check (#32488)

Summary:
This pull request aims to remove iOS 11 availability check which is no longer needed.

The minimum iOS deployment target for React Native is iOS 11 but we still have iOS 11 version check like below.

```
if (available(iOS 11.0, *)) {
```

This is a continuation pull request of #32151

## Changelog

<!-- Help reviewers and the release process by writing your own changelog entry. For an example, see:
https://github.com/facebook/react-native/wiki/Changelog
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[iOS] [Changed] - Remove iOS 11 availability check

Pull Request resolved: #32488

Reviewed By: yungsters

Differential Revision: D32006312

Pulled By: ryancat

fbshipit-source-id: 0ee6579e433a15d3d220a52d2ccd6931b0513971

React/Fabric/Mounting/ComponentViews/InputAccessory/RCTInputAccessoryContentView.mm

@@ -24,21 +24,12 @@ - (instancetype)init
     _heightConstraint = [_safeAreaContainer.heightAnchor constraintEqualToConstant:0];
     _heightConstraint.active = YES;
 
-    if (@available(iOS 11.0, *)) {
-      [NSLayoutConstraint activateConstraints:@[
-        [_safeAreaContainer.bottomAnchor constraintEqualToAnchor:self.safeAreaLayoutGuide.bottomAnchor],
-        [_safeAreaContainer.topAnchor constraintEqualToAnchor:self.safeAreaLayoutGuide.topAnchor],
-        [_safeAreaContainer.leadingAnchor constraintEqualToAnchor:self.safeAreaLayoutGuide.leadingAnchor],
-        [_safeAreaContainer.trailingAnchor constraintEqualToAnchor:self.safeAreaLayoutGuide.trailingAnchor]
-      ]];
-    } else {
-      [NSLayoutConstraint activateConstraints:@[
-        [_safeAreaContainer.bottomAnchor constraintEqualToAnchor:self.bottomAnchor],
-        [_safeAreaContainer.topAnchor constraintEqualToAnchor:self.topAnchor],
-        [_safeAreaContainer.leadingAnchor constraintEqualToAnchor:self.leadingAnchor],
-        [_safeAreaContainer.trailingAnchor constraintEqualToAnchor:self.trailingAnchor]
-      ]];
-    }
+    [NSLayoutConstraint activateConstraints:@[
+      [_safeAreaContainer.bottomAnchor constraintEqualToAnchor:self.safeAreaLayoutGuide.bottomAnchor],
+      [_safeAreaContainer.topAnchor constraintEqualToAnchor:self.safeAreaLayoutGuide.topAnchor],
+      [_safeAreaContainer.leadingAnchor constraintEqualToAnchor:self.safeAreaLayoutGuide.leadingAnchor],
+      [_safeAreaContainer.trailingAnchor constraintEqualToAnchor:self.safeAreaLayoutGuide.trailingAnchor]
+    ]];
   }
   return self;
 }

React/Fabric/Mounting/ComponentViews/ScrollView/RCTEnhancedScrollView.mm

@@ -30,12 +30,10 @@ + (BOOL)automaticallyNotifiesObserversForKey:(NSString *)key
 - (instancetype)initWithFrame:(CGRect)frame
 {
   if (self = [super initWithFrame:frame]) {
-    if (@available(iOS 11.0, *)) {
-      // We set the default behavior to "never" so that iOS
-      // doesn't do weird things to UIScrollView insets automatically
-      // and keeps it as an opt-in behavior.
-      self.contentInsetAdjustmentBehavior = UIScrollViewContentInsetAdjustmentNever;
-    }
+    // We set the default behavior to "never" so that iOS
+    // doesn't do weird things to UIScrollView insets automatically
+    // and keeps it as an opt-in behavior.
+    self.contentInsetAdjustmentBehavior = UIScrollViewContentInsetAdjustmentNever;
 
     // We intentionally force `UIScrollView`s `semanticContentAttribute` to `LTR` here
     // because this attribute affects a position of vertical scrollbar; we don't want this

React/Fabric/Mounting/ComponentViews/ScrollView/RCTScrollViewComponentView.mm

@@ -258,18 +258,16 @@ - (void)updateProps:(Props::Shared const &)props oldProps:(Props::Shared const &
     }
   }
 
-  if (@available(iOS 11.0, *)) {
-    if (oldScrollViewProps.contentInsetAdjustmentBehavior != newScrollViewProps.contentInsetAdjustmentBehavior) {
-      auto const contentInsetAdjustmentBehavior = newScrollViewProps.contentInsetAdjustmentBehavior;
-      if (contentInsetAdjustmentBehavior == ContentInsetAdjustmentBehavior::Never) {
-        scrollView.contentInsetAdjustmentBehavior = UIScrollViewContentInsetAdjustmentNever;
-      } else if (contentInsetAdjustmentBehavior == ContentInsetAdjustmentBehavior::Automatic) {
-        scrollView.contentInsetAdjustmentBehavior = UIScrollViewContentInsetAdjustmentAutomatic;
-      } else if (contentInsetAdjustmentBehavior == ContentInsetAdjustmentBehavior::ScrollableAxes) {
-        scrollView.contentInsetAdjustmentBehavior = UIScrollViewContentInsetAdjustmentAutomatic;
-      } else if (contentInsetAdjustmentBehavior == ContentInsetAdjustmentBehavior::Always) {
-        scrollView.contentInsetAdjustmentBehavior = UIScrollViewContentInsetAdjustmentAlways;
-      }
+  if (oldScrollViewProps.contentInsetAdjustmentBehavior != newScrollViewProps.contentInsetAdjustmentBehavior) {
+    auto const contentInsetAdjustmentBehavior = newScrollViewProps.contentInsetAdjustmentBehavior;
+    if (contentInsetAdjustmentBehavior == ContentInsetAdjustmentBehavior::Never) {
+      scrollView.contentInsetAdjustmentBehavior = UIScrollViewContentInsetAdjustmentNever;
+    } else if (contentInsetAdjustmentBehavior == ContentInsetAdjustmentBehavior::Automatic) {
+      scrollView.contentInsetAdjustmentBehavior = UIScrollViewContentInsetAdjustmentAutomatic;
+    } else if (contentInsetAdjustmentBehavior == ContentInsetAdjustmentBehavior::ScrollableAxes) {
+      scrollView.contentInsetAdjustmentBehavior = UIScrollViewContentInsetAdjustmentAutomatic;
+    } else if (contentInsetAdjustmentBehavior == ContentInsetAdjustmentBehavior::Always) {
+      scrollView.contentInsetAdjustmentBehavior = UIScrollViewContentInsetAdjustmentAlways;
     }
   }
 

React/Fabric/Mounting/ComponentViews/TextInput/RCTTextInputUtils.mm

@@ -210,13 +210,10 @@ UITextContentType RCTUITextContentTypeFromString(std::string const &contentType)
       @"streetAddressLine2" : UITextContentTypeStreetAddressLine2,
       @"sublocality" : UITextContentTypeSublocality,
       @"telephoneNumber" : UITextContentTypeTelephoneNumber,
+      @"username" : UITextContentTypeUsername,
+      @"password" : UITextContentTypePassword,
     } mutableCopy];
 
-    if (@available(iOS 11.0, *)) {
-      [mutableContentTypeMap
-          addEntriesFromDictionary:@{@"username" : UITextContentTypeUsername, @"password" : UITextContentTypePassword}];
-    }
-
     if (@available(iOS 12.0, *)) {
       [mutableContentTypeMap addEntriesFromDictionary:@{
         @"newPassword" : UITextContentTypeNewPassword,

React/Views/ScrollView/RCTScrollView.m

@@ -285,13 +285,10 @@ - (instancetype)initWithEventDispatcher:(id<RCTEventDispatcherProtocol>)eventDis
     _scrollView.delegate = self;
     _scrollView.delaysContentTouches = NO;
 
-    // `contentInsetAdjustmentBehavior` is only available since iOS 11.
     // We set the default behavior to "never" so that iOS
     // doesn't do weird things to UIScrollView insets automatically
     // and keeps it as an opt-in behavior.
-    if ([_scrollView respondsToSelector:@selector(setContentInsetAdjustmentBehavior:)]) {
-      _scrollView.contentInsetAdjustmentBehavior = UIScrollViewContentInsetAdjustmentNever;
-    }
+    _scrollView.contentInsetAdjustmentBehavior = UIScrollViewContentInsetAdjustmentNever;
 
     _automaticallyAdjustContentInsets = YES;
     _contentInset = UIEdgeInsetsZero;
@@ -936,12 +933,9 @@ - (void)setAutomaticallyAdjustsScrollIndicatorInsets:(BOOL)automaticallyAdjusts
 
 - (void)setContentInsetAdjustmentBehavior:(UIScrollViewContentInsetAdjustmentBehavior)behavior
 {
-  // `contentInsetAdjustmentBehavior` is available since iOS 11.
-  if ([_scrollView respondsToSelector:@selector(setContentInsetAdjustmentBehavior:)]) {
-    CGPoint contentOffset = _scrollView.contentOffset;
-    _scrollView.contentInsetAdjustmentBehavior = behavior;
-    _scrollView.contentOffset = contentOffset;
-  }
+  CGPoint contentOffset = _scrollView.contentOffset;
+  _scrollView.contentInsetAdjustmentBehavior = behavior;
+  _scrollView.contentOffset = contentOffset;
 }
 
 - (void)sendScrollEventWithName:(NSString *)eventName

ReactCommon/react/renderer/graphics/platform/ios/RCTPlatformColorUtils.mm

@@ -187,16 +187,14 @@
 facebook::react::ColorComponents RCTPlatformColorComponentsFromSemanticItems(std::vector<std::string> &semanticItems)
 {
   for (const auto &semanticCString : semanticItems) {
-    if (@available(iOS 11.0, *)) {
-      NSString *semanticNSString = _NSStringFromCString(semanticCString);
-      UIColor *uiColor = [UIColor colorNamed:semanticNSString];
-      if (uiColor != nil) {
-        return _ColorComponentsFromUIColor(uiColor);
-      }
-      uiColor = _UIColorFromSemanticString(semanticNSString);
-      if (uiColor != nil) {
-        return _ColorComponentsFromUIColor(uiColor);
-      }
+    NSString *semanticNSString = _NSStringFromCString(semanticCString);
+    UIColor *uiColor = [UIColor colorNamed:semanticNSString];
+    if (uiColor != nil) {
+      return _ColorComponentsFromUIColor(uiColor);
+    }
+    uiColor = _UIColorFromSemanticString(semanticNSString);
+    if (uiColor != nil) {
+      return _ColorComponentsFromUIColor(uiColor);
     }
   }