The filetransfer protocol says to use
application/vnd.portal.filetransfer, but I used
application/vnd.portal.files when I implemented the
protocol. Oops.
This commit dds the correct mimetype, but we still
support the old one to preserve interoperatibility
with existing flatpaks using GTK 4.6.
Fixes: #5182
We need to register the portal mime types before
the others to prefer them, doing this call async
messes up that ordering.
This is effectively reverting 69fb3648b2
This was blocking the clean exit from the testdbus shutdown in
the defaultvalues test. The proxy was keeping the connection alive
which blocks g_test_dbus_down().
This is a neverending story. I was seeing problems in tests where
the nested mainloop was picking up unrelated timeouts.
Break down and make this async. This changes the ordering in which
the (de)serializers are registered. If this is causing issues, we
can introduce priorities or something else.
