Minor Style: Make viewName nullable in native animated modules for Fabric

Summary:
Make viewName in native animations nullable, because viewName is not used when the RCTAnimationNode is managed by Fabric.

Changelog: [Internal] Minor: Make viewName nullable in native animated modules for Fabric

Reviewed By: philIip

Differential Revision: D32196270

fbshipit-source-id: 76d05dc7fd2850efb097f953ccd22fd3f6d80599

Libraries/NativeAnimation/RCTNativeAnimatedNodesManager.h

@@ -40,7 +40,7 @@
 
 - (void)connectAnimatedNodeToView:(nonnull NSNumber *)nodeTag
                           viewTag:(nonnull NSNumber *)viewTag
-                         viewName:(nonnull NSString *)viewName;
+                         viewName:(NSString *)viewName;
 
 - (void)restoreDefaultValues:(nonnull NSNumber *)nodeTag;
 

Libraries/NativeAnimation/RCTNativeAnimatedNodesManager.m

@@ -146,10 +146,11 @@ static NSString *RCTNormalizeAnimatedEventName(NSString *eventName)
 
 - (void)connectAnimatedNodeToView:(nonnull NSNumber *)nodeTag
                           viewTag:(nonnull NSNumber *)viewTag
-                         viewName:(nonnull NSString *)viewName
+                         viewName:(NSString *)viewName
 {
   RCTAnimatedNode *node = _animationNodes[nodeTag];
   if ([node isKindOfClass:[RCTPropsAnimatedNode class]]) {
+    // viewName is not used when node is managed by Fabric
     [(RCTPropsAnimatedNode *)node connectToView:viewTag
                                        viewName:viewName
                                          bridge:_bridge

Libraries/NativeAnimation/RCTNativeAnimatedTurboModule.mm

@@ -188,8 +188,8 @@ RCT_EXPORT_METHOD(connectAnimatedNodeToView:(double)nodeTag
     [_nodeIDsManagedByFabric addObject:@(nodeTag)];
   }
   [self addOperationBlock:^(RCTNativeAnimatedNodesManager *nodesManager) {
-    NSString *viewName; // Not used when node is managed by Fabric. Nodes are always managed by Fabric in Bridgeless.
-    [nodesManager connectAnimatedNodeToView:[NSNumber numberWithDouble:nodeTag] viewTag:[NSNumber numberWithDouble:viewTag] viewName:viewName];
+    // viewName is not used when node is managed by Fabric, and nodes are always managed by Fabric in Bridgeless.
+    [nodesManager connectAnimatedNodeToView:[NSNumber numberWithDouble:nodeTag] viewTag:[NSNumber numberWithDouble:viewTag] viewName:nil];
   }];
 }