This is a follow up to https://github.com/wordpress-mobile/gutenberg-mobile/issues/1329 incorporating feedback from https://github.com/WordPress/gutenberg/pull/17245 - [x] Verify Image Size Options UI updates image URL's accordingly - [x] Update Constant references to re-use size options from existing web code (Thumbnail, Full Size, etc): https://github.com/WordPress/gutenberg/pull/17245/files#r334790181 - [x] Close Bottom Sheet menu before submenu is opened, reopen initial menu when submenu is closed: https://github.com/WordPress/gutenberg/pull/17245#pullrequestreview-301932626
This is a follow up to #1329 incorporating feedback from WordPress/gutenberg#17245