jellyfing-mpv-shim: adjust settings, add to xprofile autostart

.config/jellyfin-mpv-shim/conf.json

@@ -3,7 +3,7 @@
     "always_transcode": false,
     "audio_output": "hdmi",
     "auto_play": true,
-    "check_updates": true,
+    "check_updates": false,
     "client_uuid": "8aa8f850-873d-495a-ad1d-a4f2dec05e41",
     "connect_retry_mins": 0,
     "direct_paths": false,
@@ -14,7 +14,7 @@
     "force_audio_codec": null,
     "force_set_played": false,
     "force_video_codec": null,
-    "fullscreen": true,
+    "fullscreen": false,
     "health_check_interval": 300,
     "idle_cmd": null,
     "idle_cmd_delay": 60,
@@ -104,4 +104,4 @@
     "transcode_warning": true,
     "use_web_seek": false,
     "write_logs": false
-}
+}