Cherry-picked fix from Facebook repository for RCTCxxBridge.mm

compilation error.

- Applied only the relevant changes to RCTCxxBridge.mm.
- Ignored other modifications present in the original commit.

Comitter: Omkar Sabade

---------------------------

Get ReactiveNative compiled with Clang 10 (facebook#28362)

Summary:
Pull Request resolved: facebook#28362

Fixed a few compilation errors emitted by Clang 10.

Changelog:
[iOS] [Fixed] - Get ready for Clang 10

Differential Revision: D20549970

fbshipit-source-id: dc36a85d90d3e43a05f045feb57c6ab6ded67da7

React/CxxBridge/RCTCxxBridge.mm

@@ -743,7 +743,7 @@ - (void)registerExtraLazyModules
 #endif
 }
 
-- (NSArray<RCTModuleData *> *)_initializeModules:(NSArray<id<RCTBridgeModule>> *)modules
+- (NSArray<RCTModuleData *> *)_initializeModules:(NSArray<Class> *)modules
                                withDispatchGroup:(dispatch_group_t)dispatchGroup
                                 lazilyDiscovered:(BOOL)lazilyDiscovered
 {