gst-plugins-bad: Fix for UWP build
gst-plugins-bad: Fix for UWP build

assrender was moved from codecs_gpl to codecs category

Part-of: <https://gitlab.freedesktop.org/gstreamer/cerbero/-/merge_requests/761>

nirbheek/cerbero,nirbheek/cerbero,nirbheek/cerbero,nirbheek/cerbero