Take the case into account when user filters have been set before the source gets updated. Note that the further linking of the filters, if present, happens below in the `gst_camera_bin_check_and_replace_filter()` calls. The audio filter is still affected by the same issue but left out for now. Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/5527>