Instead, rely on position-updated which is also called always, and also a little later than media-info-updated, giving GstPlayer time to figure out more of the video info. Tested on local and remote mount videos, images, sound files. Works around / fixes https://gitlab.gnome.org/GNOME/gtk/-/issues/3913, https://gitlab.gnome.org/GNOME/gtk/-/issues/3914.