Fixes https://github.com/zed-industries/zed/issues/54830
This fixes a bugs where
* when there's no main worktree, we treated the first linked worktree as
main
* the titlebar and sidebar showed two different things when opening a
linked wortree directly
When there's no main worktree, our "project group key" will be the bare
repo path. For displaying this to the user, we try to present something
meaningful:
* If the bare repo is `foo.git`, we'll say "foo"
* If the bare repo is "bar/.bare", we'll "bar"
Release Notes:
- Fixed bugs in Zed's sidebar and titlebar when editing in git worktrees
created from bare repositories.
Max Brunsfeld
17c284803f