Improve GCP project selection menu for navigating thousands of projects

[dharmab]

My organization has thousands of GCP projects, so scrolling the "Select a GCP project" menu in gws auth setup is very slow to navigate. A lot of the project IDs have long numeric suffixes so the user might not know the exact ID without having to look it up.

Being able to prefix-search or fuzzy-search the list would make it easier to find the right project.

[aniruddhaadak80]

From my point of view, once the project list gets into the thousands, a pure scroll menu stops being a selector and becomes a failure mode. Prefix search, fuzzy filtering, and a small recent-project cache would solve most of the pain without changing the underlying auth flow.

It would also help if the selection UI could show both human-readable names and trimmed project IDs in a way that makes near-duplicate entries easier to disambiguate.