Disable weak event emitter in AttributedString for Mac Catalyst (#48225)

Summary:
Pull Request resolved: #48225

Fixes #47762

The weak event emitter in AttributedString attributes is causing a serialization error when typing into a TextInput in a Mac Catalyst build. We can resolve this by not putting the event emitters in the attributed string, but this is likely to cause other issues with event handling for nested <Text> components.

## Changelog

[iOS][Fixed] - Workaround for Mac Catalyst TextInput crash due to serialization attempt of WeakEventEmitter

Reviewed By: NickGerleman

Differential Revision: D66664583

fbshipit-source-id: efdfbcb0db4d5e6b9bf7c14f9bbb221faae2d724

packages/react-native/React/Fabric/Mounting/ComponentViews/TextInput/RCTTextInputComponentView.mm

@@ -99,9 +99,11 @@ - (void)updateEventEmitter:(const EventEmitter::Shared &)eventEmitter
   NSMutableDictionary<NSAttributedStringKey, id> *defaultAttributes =
       [_backedTextInputView.defaultTextAttributes mutableCopy];
 
+#if !TARGET_OS_MACCATALYST
   RCTWeakEventEmitterWrapper *eventEmitterWrapper = [RCTWeakEventEmitterWrapper new];
   eventEmitterWrapper.eventEmitter = _eventEmitter;
   defaultAttributes[RCTAttributedStringEventEmitterKey] = eventEmitterWrapper;
+#endif
 
   _backedTextInputView.defaultTextAttributes = defaultAttributes;
 }
@@ -262,8 +264,10 @@ - (void)updateProps:(const Props::Shared &)props oldProps:(const Props::Shared &
   if (newTextInputProps.textAttributes != oldTextInputProps.textAttributes) {
     NSMutableDictionary<NSAttributedStringKey, id> *defaultAttributes =
         RCTNSTextAttributesFromTextAttributes(newTextInputProps.getEffectiveTextAttributes(RCTFontSizeMultiplier()));
+#if !TARGET_OS_MACCATALYST
     defaultAttributes[RCTAttributedStringEventEmitterKey] =
         _backedTextInputView.defaultTextAttributes[RCTAttributedStringEventEmitterKey];
+#endif
     _backedTextInputView.defaultTextAttributes = defaultAttributes;
   }
 

packages/react-native/ReactCommon/react/renderer/textlayoutmanager/platform/ios/react/renderer/textlayoutmanager/RCTAttributedTextUtils.mm

@@ -403,6 +403,7 @@ void RCTApplyBaselineOffset(NSMutableAttributedString *attributedText)
 {
   auto nsAttributedStringFragment = RCTNSAttributedStringFragmentFromFragment(fragment, placeholderImage);
 
+#if !TARGET_OS_MACCATALYST
   if (fragment.parentShadowView.componentHandle) {
     RCTWeakEventEmitterWrapper *eventEmitterWrapper = [RCTWeakEventEmitterWrapper new];
     eventEmitterWrapper.eventEmitter = fragment.parentShadowView.eventEmitter;
@@ -413,6 +414,7 @@ void RCTApplyBaselineOffset(NSMutableAttributedString *attributedText)
     [nsAttributedStringFragment addAttributes:additionalTextAttributes
                                         range:NSMakeRange(0, nsAttributedStringFragment.length)];
   }
+#endif
 
   return nsAttributedStringFragment;
 }