backport 1.18: gl/wayland: Use consistent wl_display when creating work queue for proxy wrapper
Without this, glimagesink since wayland 727c7903 fails with gst-launch-1.0: ../src/wayland-client.c:2181: wl_proxy_set_queue: Assertion 'proxy->display == queue->display' failed.
Backport of !1200 (merged)
Edited by Javier Jardón