Summary:
There is a conflict between RCTImageLoader and RCTAssetsLibraryRequestHandler on handling images, which was caused by making RCTPhotoLibraryImageLoader able to handle assets library requests as well. This gives more priority to RCTImageLoader instead.
Fixes#9031.
Reviewed By: mmmulani
Differential Revision: D3627451
fbshipit-source-id: 7ffd2c66f43ce1479c9a117768fb2d29f9d0dc08