Add tests for extraction API endpoints and enhance existing tests

- Implement tests for admin extraction API endpoints including status retrieval, deletion of extractions, and permission checks.
- Add tests for user extraction deletion, ensuring proper handling of permissions and non-existent extractions.
- Enhance sound endpoint tests to include duplicate handling in responses.
- Refactor favorite service tests to utilize mock dependencies for better maintainability and clarity.
- Update sound scanner tests to improve file handling and ensure proper deletion of associated files.

tests/api/v1/admin/test_sound_endpoints.py

@@ -31,6 +31,7 @@ class TestAdminSoundEndpoints:
             "deleted": 1,
             "skipped": 0,
             "errors": 0,
+            "duplicates": 0,
             "files": [
                 {
                     "filename": "test1.mp3",
@@ -176,6 +177,7 @@ class TestAdminSoundEndpoints:
             "deleted": 0,
             "skipped": 0,
             "errors": 0,
+            "duplicates": 0,
             "files": [
                 {
                     "filename": "custom1.wav",