ci: Use --wrap-mode=default on macOS CI runner (only)
ci: Use --wrap-mode=default on macOS CI runner (only)

This is a partial revert of commit 595e12b5fb for macOS only, since we
can’t run a VM image on that CI runner, and hence can’t easily
pre-populate it with cached dependencies.

Signed-off-by: Philip Withnall <29c2a2ac2a854b9cf047275aa9de346d096be2e0@endlessm.com>

endlessm/glib,endlessm/glib,endlessm/glib,endlessm/glib,endlessm/glib