[Performance] Images on the iOS disk should be loaded from the background thread

[hellohublot]

Description

If an image is on the disk, we can't load it in the main thread, because it will cause the main thread to get stuck. The affected libraries include react-native-code-push and a series of libraries that save the image in the sandbox https://github.com/facebook/react-native/blob/c868d5b26c5d680603d3f653de9277124c1b539b/Libraries/Image/RCTLocalAssetImageLoader.mm#L25-L35

After

 - (BOOL)canLoadImageURL:(NSURL *)requestURL
 {
-  return RCTIsLocalAssetURL(requestURL);
+  return RCTIsBundleAssetURL(requestURL);
 }

Why

The requiresScheduling returns false, so this is loaded in the main thread, but images on disk should be ignored here, then RCTImageURLLoaderRequest will automatically load it in a background thread

Version

all version

Output of npx react-native info

None

Steps to reproduce

None

Snack, code example, screenshot, or link to a repository

None