Follow-up to #46337
`project_panel` tests enable `remote/test-support` (via
`workspace`/`project`), which adds `RemoteConnectionOptions::Mock`. But
without `remote_connection/test-support`, the match arm for that variant
isn't compiled, causing a non-exhaustive match error when testing the
crate in isolation.
CI doesn't catch this because `git_ui` happens to enable
`remote_connection/test-support` during workspace-wide tests.
Release Notes:
- N/A
Smit Barmase
b0f807e903