refactor(tests): Add strict type hints to third batch of test files

tests/test_mma_dashboard_refresh.py

@@ -1,9 +1,10 @@
 import pytest
 from unittest.mock import patch, MagicMock
+from typing import Any
 from gui_2 import App
 
 @pytest.fixture
-def app_instance():
+def app_instance() -> Any:
 # We patch the dependencies of App.__init__ to avoid side effects
  with (
   patch('gui_2.load_config', return_value={'ai': {}, 'projects': {}}),
@@ -23,7 +24,7 @@ def app_instance():
   # Return the app and the mock_pm for use in tests
   yield app, mock_pm
 
-def test_mma_dashboard_refresh(app_instance):
+def test_mma_dashboard_refresh(app_instance: Any) -> None:
  app, mock_pm = app_instance
  # 1. Define mock tracks
  mock_tracks = [
@@ -43,7 +44,7 @@ def test_mma_dashboard_refresh(app_instance):
  # Verify get_all_tracks was called with the correct base_dir
  mock_pm.get_all_tracks.assert_called_with(app.ui_files_base_dir)
 
-def test_mma_dashboard_initialization_refresh(app_instance):
+def test_mma_dashboard_initialization_refresh(app_instance: Any) -> None:
  """
     Checks that _refresh_from_project is called during initialization if 
     _load_active_project is NOT mocked to skip it (but here it IS mocked in fixture).