Fix image block render in Xcode 12 (#25470)

* Fix image block render in Xcode 12

This PR fixes #25431 which is a bug that prevents Image blocks from rendering their images. This only affects builds made using Xcode 12.
The bug itself is in React Native itself and was fixed in RN 0.63. Since we're on RN 0.61.5, we need to apply a patch (as suggested here facebook/react-native#29279 (comment)).

The patch was applied using the following steps found here: facebook/react-native#29279 (comment)

* Remove unnecessary changes to RN patch file

patches/react-native+0.61.5.patch

@@ -21,6 +21,20 @@ index 65fa2bb..c5f265b 100644
      index++;
    }
 
+diff --git a/node_modules/react-native/Libraries/Image/RCTUIImageViewAnimated.m b/node_modules/react-native/Libraries/Image/RCTUIImageViewAnimated.m
+index 01aa75f..572572c 100644
+--- a/node_modules/react-native/Libraries/Image/RCTUIImageViewAnimated.m
++++ b/node_modules/react-native/Libraries/Image/RCTUIImageViewAnimated.m
+@@ -266,6 +266,9 @@ - (void)displayDidRefresh:(CADisplayLink *)displayLink
+
+ - (void)displayLayer:(CALayer *)layer
+ {
++  if (!_currentFrame) {
++    _currentFrame = self.image;
++  }
+   if (_currentFrame) {
+     layer.contentsScale = self.animatedImageScale;
+     layer.contents = (__bridge id)_currentFrame.CGImage;
 diff --git a/node_modules/react-native/React/Views/RCTShadowView.m b/node_modules/react-native/React/Views/RCTShadowView.m
 index 40c0cda..646f137 100644
 --- a/node_modules/react-native/React/Views/RCTShadowView.m