"git checkout/switch" with branches from remotes

[hongquan]

The autocomplete provider for git checkout or git switch should also return branches which don't exist in local copy but exists in one of remotes. For example, we have:

❯ git branch -a
* development
  feature/reformat-with-ruff
  feature/uv-ruff
  fix/gh-action-deploy
  remotes/origin/HEAD -> origin/development
  remotes/origin/development
  remotes/upstream/development
  remotes/upstream/docker-dev

The docker-dev exists in "upstream" remote but not in "origin", nor local. It should be included in the auto-complete.