Fix action labels on iOS, fixes facebook#53496 (facebook#54286)

Summary:
This is my PR 2 out of 3 to improve accessibility on iOS. If you're reading this, please also have a look at facebook#54131, this is a critical race condition bug that basically makes accessibility extremely hard to handle on large apps.

Fix for facebook#53496: on the new architecture, any accessibility label is ignored and only the "name" is read by VoiceOver. We want to use name as an "action id", and label as the translatable value. While android has a id/label system for actions, iOS doesn't so my implementation, inspired by the old paper architecture, maps labels to name. Native iOS will only see the labels but the JS side will properly receive names when an action is executed. I believe this is the correct way of handling this. Another thing we could do is just deprecate "label" and expect name to be in the correct language, but I do not like that.

## Changelog:

[IOS][FIXED] - Accessibility actions labels are not read by VoiceOver

Pull Request resolved: facebook#54286

Test Plan:
Open RN-Tester, go to Accessibility -> Accessibility Action Examples, enable VoiceOver and select "This view supports many actions". Now scroll up fast to select the actions.

On the current implementation you will hear VoiceOver say "copy", then "cut", then "paste". It now says "cut label", "copy label", "paste label".

As a reference, here's how this view is implemented:
```jsx
<View
  accessible={true}
  accessibilityActions={[
    {name: 'cut', label: 'cut label'},
    {name: 'copy', label: 'copy label'},
    {name: 'paste', label: 'paste label'},
  ]}
  onAccessibilityAction={event => {
    switch (event.nativeEvent.actionName) {
      case 'cut':
        Alert.alert('Alert', 'cut action success');
        break;
      case 'copy':
        Alert.alert('Alert', 'copy action success');
        break;
      case 'paste':
        Alert.alert('Alert', 'paste action success');
        break;
    }
  }}>
  <RNTesterText>This view supports many actions.</RNTesterText>
</View>
```

Reviewed By: cipolleschi

Differential Revision: D87766483

Pulled By: javache

fbshipit-source-id: a979f0126efce4b87c6d823519d512229fb4118e

Author: maxencehenneron

packages/react-native/React/Fabric/Mounting/ComponentViews/View/RCTViewComponentView.mm

@@ -1497,8 +1497,15 @@ - (BOOL)shouldGroupAccessibilityChildren
 
   NSMutableArray<UIAccessibilityCustomAction *> *customActions = [NSMutableArray array];
   for (const auto &accessibilityAction : accessibilityActions) {
+    NSString *actionName = RCTNSStringFromString(accessibilityAction.name);
+    NSString *actionLabel = actionName;
+
+    if (accessibilityAction.label.has_value()) {
+      actionLabel = RCTNSStringFromString(accessibilityAction.label.value());
+    }
+
     [customActions
-        addObject:[[UIAccessibilityCustomAction alloc] initWithName:RCTNSStringFromString(accessibilityAction.name)
+        addObject:[[UIAccessibilityCustomAction alloc] initWithName:actionLabel
                                                              target:self
                                                            selector:@selector(didActivateAccessibilityCustomAction:)]];
   }
@@ -1553,7 +1560,17 @@ - (void)accessibilityDecrement
 - (BOOL)didActivateAccessibilityCustomAction:(UIAccessibilityCustomAction *)action
 {
   if (_eventEmitter && _props->onAccessibilityAction) {
-    _eventEmitter->onAccessibilityAction(RCTStringFromNSString(action.name));
+    // iOS defines the name as the localized label, so iterate through accessibilityActions to find the matching
+    // non-localized action name when passing to JS. This allows for standard action names across platforms.
+    NSString *actionName = action.name;
+    for (const auto &accessibilityAction : _props->accessibilityActions) {
+      if (accessibilityAction.label.has_value() &&
+          [RCTNSStringFromString(accessibilityAction.label.value()) isEqualToString:action.name]) {
+        actionName = RCTNSStringFromString(accessibilityAction.name);
+        break;
+      }
+    }
+    _eventEmitter->onAccessibilityAction(RCTStringFromNSString(actionName));
     return YES;
   } else {
     return NO;