Expose testID as resource-id on Android (#3287)

## Description

When using `RectButton` and friends the `testID` prop is accessible in
E2E testing frameworks on iOS but not on Android. This PR aligns
behaviour of RN core components by exposing `testID` as a `resource-id`.

Fixes
#1661

## Test plan

Been testing this via Maestro Studio.

Author: oblador

android/src/main/java/com/swmansion/gesturehandler/react/RNGestureHandlerButtonViewManager.kt

@@ -22,7 +22,9 @@ import android.view.View
 import android.view.View.OnClickListener
 import android.view.ViewGroup
 import android.view.ViewParent
+import android.view.accessibility.AccessibilityNodeInfo
 import androidx.core.view.children
+import com.facebook.react.R
 import com.facebook.react.module.annotations.ReactModule
 import com.facebook.react.uimanager.PixelUtil
 import com.facebook.react.uimanager.ThemedReactContext
@@ -241,6 +243,20 @@ class RNGestureHandlerButtonViewManager : ViewGroupManager<ButtonViewGroup>(), R
       _backgroundColor = color
     }
 
+    override fun onInitializeAccessibilityNodeInfo(info: AccessibilityNodeInfo) {
+      super.onInitializeAccessibilityNodeInfo(info)
+
+      // Expose the testID prop as the resource-id name of the view. Black-box E2E/UI testing
+      // frameworks, which interact with the UI through the accessibility framework, do not have
+      // access to view tags. This allows developers/testers to avoid polluting the
+      // content-description with test identifiers.
+      val testId = super.getTag(R.id.react_test_id)
+
+      if (testId is String) {
+        info.setViewIdResourceName(testId)
+      }
+    }
+
     override fun onInterceptTouchEvent(ev: MotionEvent): Boolean {
       if (super.onInterceptTouchEvent(ev)) {
         return true