Use tag ids for testID

Summary: View tags are currently used for end-to-end test IDs. We'd like to overload the tag field with other information such as nativeID (for native refs) and transitionID (for shared element transitions) in the future. Added a key for testID's tag

Reviewed By: AaaChiuuu

Differential Revision: D4770368

fbshipit-source-id: b76c53a20520aac1b25d435b6d5eb809e8833675

ReactAndroid/src/main/java/com/facebook/react/uimanager/BaseViewManager.java

@@ -5,6 +5,7 @@ package com.facebook.react.uimanager;
 import android.graphics.Color;
 import android.os.Build;
 import android.view.View;
+import com.facebook.react.R;
 import com.facebook.react.bridge.ReadableArray;
 import com.facebook.react.uimanager.annotations.ReactProp;
 
@@ -85,6 +86,9 @@ public abstract class BaseViewManager<T extends View, C extends LayoutShadowNode
 
   @ReactProp(name = PROP_TEST_ID)
   public void setTestId(T view, String testId) {
+    view.setTag(R.id.react_test_id, testId);
+
+    // temporarily set the tag and keyed tags to avoid end to end test regressions
     view.setTag(testId);
   }