Martin von Zweigbergk 88157c32b9 tests: avoid using the local backend
Now that we depend on the `git` executable being available for `jj git
fetch/push` tests, we might as well use it for `jj util gc` tests
too.

I also switched to using the Git backend in
`cli/tests/test_file_track_untrack_commands.rs`, which seemed to be
using the local backend for no good reason.
2025-03-04 22:12:17 +00:00
..