Summary:
To get `RCTNativeAnimatedModule` working bridgeless, I need to get `RCTEventDispatcher` working bridgeless.
To get `RCTEventDispatcher` working bridgeless, I need to support 2 new bridge methods:
- `- (void)enqueueJSCall:(NSString *)moduleDotMethod args:(NSArray *)args`
- `- (void)dispatchBlock:(dispatch_block_t)block queue:(dispatch_queue_t)queue;`
For (1) I copied the bridge impl exactly. For (2), the bridge only dispatches to JS thread, else uses `dispatch_async`. I only added support for dispatching to JS thread, callers can `dispatch_async` themselves if they want to.
Changelog: [Internal]
Differential Revision: D22962292
fbshipit-source-id: e34d15aee72f80dffcaa945bfda05ea415f66df7
c494d590fb