Now that we have video messages working end-to-end, we can "flip the switch" to enable video messages.
Specifically:
- Set serverCanHandle to true for video types in lib/media/file-utils
- Set versionCode for hasMinCodeVersion check in multimedia-message-spec to 148
- Add MediaLibrary.MediaType.video to mediaType array in multimedia-gallery-keyboard.react so users can select videos from their media gallery
Depends on D5240