fix: Feast UI importlib change (#4248)

Fix import usage in Feast UI

Signed-off-by: franco-bocci <franco.bocci@wolt.com>
Co-authored-by: franco-bocci <franco.bocci@wolt.com>

sdk/python/feast/ui_server.py

@@ -51,7 +51,7 @@ def shutdown_event():
 
     async_refresh()
 
-    ui_dir_ref = importlib_resources.files(__name__) / "ui/build/"
+    ui_dir_ref = importlib_resources.files(__spec__.parent) / "ui/build/"  # type: ignore[name-defined]
     with importlib_resources.as_file(ui_dir_ref) as ui_dir:
         # Initialize with the projects-list.json file
         with ui_dir.joinpath("projects-list.json").open(mode="w") as f: