style: sort Xlib import in foreground_service

Resolves the ruff I001 warning introduced by 61cdce9.

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

media_server/services/foreground_service.py

@@ -387,7 +387,7 @@ def _probe_linux() -> ForegroundInfo:
         )
 
     try:
-        from Xlib import display, X  # type: ignore  # noqa: F401
+        from Xlib import X, display  # type: ignore  # noqa: F401
     except Exception:
         return ForegroundInfo(available=False, error="python-xlib not installed")