Refactor code structure for improved readability and maintainability

tests/repositories/test_user_oauth.py

@@ -19,7 +19,7 @@ class TestUserOauthRepository:
     async def user_oauth_repository(
         self,
         test_session: AsyncSession,
-    ) -> AsyncGenerator[UserOauthRepository, None]:
+    ) -> AsyncGenerator[UserOauthRepository]:
         """Create a user OAuth repository instance."""
         yield UserOauthRepository(test_session)
 
@@ -37,7 +37,7 @@ class TestUserOauthRepository:
         self,
         test_session: AsyncSession,
         test_user_id: int,
-    ) -> AsyncGenerator[UserOauth, None]:
+    ) -> AsyncGenerator[UserOauth]:
         """Create a test OAuth record."""
         oauth_data = {
             "user_id": test_user_id,