Summary:
RCTCameraRollManager.m crashes when there is no filename provided for the asset (usually from iCloud). #13671
Tested on real device with iCloud library using the library without and after my fix. It worked after my changes.
[IOS] [BUGFIX] [CameraRoll] - Changed the filename if nil to be empty when the asset is coming from iCloud.
Closes https://github.com/facebook/react-native/pull/17549
Differential Revision: D6710665
Pulled By: hramos
fbshipit-source-id: 319865b0a71728798c62ee380e7bee4af584b3e3