2157497405
Adds a new test to textoverlay to make sure it can properly handle elements that have ANY caps but fail to add the overlay meta in the allocation query. This test verifies that textoverlay won't use the caps features even knowing that the overlay meta is accepted when querying the downstream caps because it also needs downstream to confirm by putting the meta in the allocation query. https://bugzilla.gnome.org/show_bug.cgi?id=735800