Add ifdefs for new arch

Author: m-bert

packages/react-native-gesture-handler/apple/RNGestureHandlerManager.h

@@ -12,6 +12,8 @@
 #ifdef RCT_NEW_ARCH_ENABLED
 - (nonnull instancetype)initWithModuleRegistry:(nonnull RCTModuleRegistry *)moduleRegistry
                                   viewRegistry:(nonnull RCTViewRegistry *)viewRegistry;
+
+- (void)reattachHandlersIfNeeded;
 #else
 - (nonnull instancetype)initWithUIManager:(nonnull RCTUIManager *)uiManager
                           eventDispatcher:(nonnull id<RCTEventDispatcherProtocol>)eventDispatcher;
@@ -37,6 +39,4 @@
 
 - (nullable RNGestureHandler *)handlerWithTag:(nonnull NSNumber *)handlerTag;
 
-- (void)reattachHandlersIfNeeded;
-
 @end

packages/react-native-gesture-handler/apple/RNGestureHandlerManager.mm

@@ -256,6 +256,7 @@ - (id)handlerWithTag:(NSNumber *)handlerTag
   return [_registry handlerWithTag:handlerTag];
 }
 
+#ifdef RCT_NEW_ARCH_ENABLED
 - (void)reattachHandlersIfNeeded
 {
   // Re-bind handlers to their current native views. On Fabric, when a parent view has
@@ -270,6 +271,7 @@ - (void)reattachHandlersIfNeeded
     [self maybeBindHandler:handler.tag toViewWithTag:handler.viewTag withActionType:handler.actionType];
   }
 }
+#endif
 
 #pragma mark Root Views Management