1e2bc68171
`gst_wl_window_set_opaque` does not get called on window resizes, potentially leaving opaque regions too small. According to the spec opaque regions can be bigger than the surface size - parts that fall outside of the surface will get ignored. Thus we can can simply use `G_MAXINT32` and be sure that the whole surfaces will always be covered. Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1446>