flatpak_dir_collect_deployed_refs() has the order of its "branch" and "arch"
arguments wrong, as does its only caller flatpak_list_deployed_refs().
When flatpak_list_deployed_refs() is called by add_extension() the arch
is put in the branch argument and vice versa. But then in the
implementation the arch is used as if it's the branch and vice versa, so
there's no functional bug here. Fix the order for readability.
Similarly, flatpak_list_unmaintained_refs() has the order wrong, but the
confusion is only within that function, since the order is correct in
its caller add_extension() and in the function it uses,
flatpak_dir_collect_unmaintained_refs(). So there's no functional bug
there either, but fix the order.
Closes: #3067
Approved by: alexlarsson
3706695fb3