Here's another PR with a couple of typos fixed. As you can see there was a typo in _fileReferenceI**n**dentifiers_, in class _ParsedProjectInfo._ Maybe we should do some check on that since I'm not sure if that property is used somewhere outside Flutter?
Fixes https://github.com/flutter/flutter/issues/143482
This brings in the gallery more or less as is:
* Removed localizations
* Ensure tests still run (locally verified, will switch CI later).
* Removed deferred components
* Fixup pubspec