fix: #6802 prevent 500 internal server error when patching recipe tags

[SimeonSouttar]

fix: #6802 prevent 500 internal server error when patching recipe tags

What this PR does / why we need it:

This PR fixes a 500 Internal Server Error (TypeError: init() missing 1 required positional argument: 'group_id') that occurs when patching a recipe with new tags via the API.

The issue was caused by RecipeService.patch_one not injecting the current user's group_id into new tags before attempting to update the recipe. The Tag ORM model requires group_id for initialization, but this field is typically excluded from the RecipeTag Pydantic model during patch operations (where exclude_unset=True is used).

Changes:

• mealie/services/recipe/recipe_service.py: Updated patch_one to iterate over patch_data.tags (if present) and explicitly inject self.user.group_id into any tag that needs it.

Which issue(s) this PR fixes:

• Fixes [BUG] - 500 Internal Server Error when Patching Recipe Tags #6802

Testing

I have added a new integration test case to reproduce the bug and verify the fix.

• New Test: tests/integration_tests/user_recipe_tests/test_issue_6802_patch_tags.py

• Verification: Ran the test locally with Python 3.12.

• Command: pytest tests/integration_tests/user_recipe_tests/test_issue_6802_patch_tags.py

• Result: PASSED

[michael-genson]

Thanks for this! A couple small things:

• Is it possible to move this to the recipe repo instead of the service? That way we can fix this for updates as well as patches
• Can we do this for categories/tools too? I'm guessing it's the same issue.
• Can we move the test to tests/unit_tests/repository_tests/test_recipe_repository.py? (assuming we move the functionality to the repo)

[SimeonSouttar]

@michael-genson updated inline with your previous comments

[michael-genson]

Thank you!