Describe the bug:
The HTMLMediaElement doesn't implement yet releasing of the underlaying media resources (servo-media::Player and media frames).

To Reproduce:

1. Run test with
   `GST_DEBUG=3,gst-play*:7 ./mach test-wpt tests/wpt/tests/html/semantics/embedded-content/the-video-element/intrinsic_sizes.htm -r --log-mach=-
2. Close window
3. Check logging with absent the following lines

TRACE               gst-play gstplay.c:2614:gst_play_main:<play0> Stopped main thread
TRACE               gst-play gstplay.c:475:gst_play_finalize:<play0> Finalizing

Platform:
Ubuntu 22.04