Do not register RCTSurfacePresenterObserver for animatedShouldSignalBatch (facebook#50247)

Summary:
Pull Request resolved: facebook#50247

Rather than nooping the RCTSurfacePresenterObserver in RCTNativeAnimatedTurboModule, we should just not register the observer when using ReactNativeFeatureFlags::animatedShouldSignalBatch.

## Changelog

[Internal]

Reviewed By: shwanton

Differential Revision: D71735004

fbshipit-source-id: 5176497197314a9b07fc9bd77828f7a2af2650ea

Author: rozele

packages/react-native/Libraries/NativeAnimation/RCTNativeAnimatedTurboModule.mm

@@ -51,7 +51,9 @@ - (void)initialize
 {
   // _surfacePresenter set in setSurfacePresenter:
   _nodesManager = [[RCTNativeAnimatedNodesManager alloc] initWithBridge:nil surfacePresenter:_surfacePresenter];
-  [_surfacePresenter addObserver:self];
+  if (!facebook::react::ReactNativeFeatureFlags::animatedShouldSignalBatch()) {
+    [_surfacePresenter addObserver:self];
+  }
   [[self.moduleRegistry moduleForName:"EventDispatcher"] addDispatchObserver:self];
 }
 
@@ -60,7 +62,9 @@ - (void)invalidate
   [super invalidate];
   [_nodesManager stopAnimationLoop];
   [[self.moduleRegistry moduleForName:"EventDispatcher"] removeDispatchObserver:self];
-  [_surfacePresenter removeObserver:self];
+  if (!facebook::react::ReactNativeFeatureFlags::animatedShouldSignalBatch()) {
+    [_surfacePresenter removeObserver:self];
+  }
 }
 
 /*
@@ -325,10 +329,6 @@ - (void)flushOperationQueues
 
 - (void)willMountComponentsWithRootTag:(NSInteger)rootTag
 {
-  if (facebook::react::ReactNativeFeatureFlags::animatedShouldSignalBatch()) {
-    return;
-  }
-
   RCTAssertMainQueue();
   RCTExecuteOnUIManagerQueue(^{
     NSArray<AnimatedOperation> *preOperations = self->_preOperations;
@@ -344,10 +344,6 @@ - (void)willMountComponentsWithRootTag:(NSInteger)rootTag
 
 - (void)didMountComponentsWithRootTag:(NSInteger)rootTag
 {
-  if (facebook::react::ReactNativeFeatureFlags::animatedShouldSignalBatch()) {
-    return;
-  }
-
   RCTAssertMainQueue();
   RCTExecuteOnUIManagerQueue(^{
     NSArray<AnimatedOperation> *operations = self->_operations;