player/command: fix missing property update for some hwdec changes

fixes #16710

Author: sfan5

player/command.c

@@ -7969,6 +7969,9 @@ void mp_option_run_callback(struct MPContext *mpctx, struct mp_option_callback *
         struct mp_decoder_wrapper *dec = track ? track->dec : NULL;
         if (dec) {
             mp_decoder_wrapper_control(dec, VDCTRL_REINIT, NULL);
+            // filter chain might not change (which normally triggers this), but
+            // hwdec will.
+            mp_notify(mpctx, MPV_EVENT_VIDEO_RECONFIG, NULL);
             double last_pts = mpctx->video_pts;
             if (last_pts != MP_NOPTS_VALUE)
                 queue_seek(mpctx, MPSEEK_ABSOLUTE, last_pts, MPSEEK_EXACT, 0);