Suppress deprecated status bar APIs in RCTStatusBarManager (#49315)

Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/49315

Changelog: [iOS][Fixed] Suppressed iOS 13 deprecation warnings in RCTStatusBarManager

Reviewed By: NickGerleman

Differential Revision: D69334478

fbshipit-source-id: b643c52d928f95f33659a643d0cc1d7de1f65563

packages/react-native/React/CoreModules/RCTStatusBarManager.mm

@@ -80,6 +80,8 @@ RCT_EXPORT_MODULE()
 - (void)startObserving
 {
   NSNotificationCenter *nc = [NSNotificationCenter defaultCenter];
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wdeprecated-declarations"
   [nc addObserver:self
          selector:@selector(applicationDidChangeStatusBarFrame:)
              name:UIApplicationDidChangeStatusBarFrameNotification
@@ -88,6 +90,7 @@ RCT_EXPORT_MODULE()
          selector:@selector(applicationWillChangeStatusBarFrame:)
              name:UIApplicationWillChangeStatusBarFrameNotification
            object:nil];
+#pragma clang diagnostic pop
 }
 
 - (void)stopObserving
@@ -97,7 +100,10 @@ RCT_EXPORT_MODULE()
 
 - (void)emitEvent:(NSString *)eventName forNotification:(NSNotification *)notification
 {
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wdeprecated-declarations"
   CGRect frame = [notification.userInfo[UIApplicationStatusBarFrameUserInfoKey] CGRectValue];
+#pragma clang diagnostic pop
   NSDictionary *event = @{
     @"frame" : @{
       @"x" : @(frame.origin.x),