Fix #7099 (#7251)

* Set step prop before value prop

* Embed comments on .step sequence behavior

(cherry picked from commit fc04310)

src/renderers/dom/client/wrappers/ReactDOMInput.js

@@ -64,6 +64,9 @@ var ReactDOMInput = {
       // Make sure we set .type before any other properties (setting .value
       // before .type means .value is lost in IE11 and below)
       type: undefined,
+      // Make sure we set .step before .value (setting .value before .step
+      // means .value is rounded on mount, based upon step precision)
+      step: undefined,
     }, DisabledInputUtils.getHostProps(inst, props), {
       defaultChecked: undefined,
       defaultValue: undefined,

src/renderers/dom/client/wrappers/__tests__/ReactDOMInput-test.js

@@ -718,7 +718,7 @@ describe('ReactDOMInput', function() {
     );
   });
 
-  it('sets type before value always', function() {
+  it('sets type and step before value always', function() {
     if (!ReactDOMFeatureFlags.useCreateElement) {
       return;
     }
@@ -740,12 +740,14 @@ describe('ReactDOMInput', function() {
       return el;
     });
 
-    ReactTestUtils.renderIntoDocument(<input value="hi" type="radio" />);
-    // Setting value before type does bad things. Make sure we set type first.
+    ReactTestUtils.renderIntoDocument(<input value="0" type="range" min="0" max="100" step="1" />);
     expect(log).toEqual([
       'set data-reactroot',
       'set type',
+      'set step',
       'set value',
+      'set min',
+      'set max',
       'set value',
       'set checked',
       'set checked',