W3CPointerEvents: fix unintentional shallow copy of coordinates (#38201)

Summary:
Pull Request resolved: #38201

Changelog: [Android] [Internal] - W3CPointerEvents: fix unintentional shallow copy of coordinates

When normalizing pointer event state, we previously only made a shallow copy and thus unintentionally modified the coordinate values in the original event state. This change fixes the issue by creating new coordinate arrays for the normalized event state instead of reusing the existing ones.

Reviewed By: javache

Differential Revision: D47230953

fbshipit-source-id: b29118c1ec32cd80fc0f05b2a55f283ef060f244

packages/react-native/ReactAndroid/src/main/java/com/facebook/react/uimanager/JSPointerDispatcher.java

@@ -674,16 +674,14 @@ private PointerEventState normalizeToRoot(PointerEventState original, float root
     Map<Integer, float[]> newOffsets = new HashMap<>(original.getOffsetByPointerId());
     Map<Integer, float[]> newEventCoords = new HashMap<>(original.getEventCoordinatesByPointerId());
 
+    float[] rootOffset = {rootX, rootY};
     for (Map.Entry<Integer, float[]> offsetEntry : newOffsets.entrySet()) {
-      float[] offsetValue = offsetEntry.getValue();
-      offsetValue[0] = rootX;
-      offsetValue[1] = rootY;
+      offsetEntry.setValue(rootOffset);
     }
 
+    float[] zeroOffset = {0, 0};
     for (Map.Entry<Integer, float[]> eventCoordsEntry : newEventCoords.entrySet()) {
-      float[] eventCoordsValue = eventCoordsEntry.getValue();
-      eventCoordsValue[0] = 0;
-      eventCoordsValue[1] = 0;
+      eventCoordsEntry.setValue(zeroOffset);
     }
 
     return new PointerEventState(