If the application relies on GstPlaySignalAdapter, no special clean-up is required. Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/5643>
Also mentioning the need to set the bus to flushing state before disposing the player in order to avoid reference cycles. Fixes #3107 Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/5631>
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/3010>