Fix ask prompts to allow prompt override/injection

[pamelafox]

Purpose

In my most recent PR, to prompt to Prompty, I accidentally removed the ability to override the prompt template for the Ask tab. In fixing this, I discovered that we never had the ability to inject to the end of the prompt for the Ask tab. We should have both override/inject for both tabs, since the developer settings indicates it's possible for both of them.

I added tests to verify the changes, as we were missing tests for this before.

Does this introduce a breaking change?

When developers merge from main and run the server, azd up, or azd deploy, will this produce an error?
If you're not sure, try it out on an old environment.

[ ] Yes
[X] No

Does this require changes to learn.microsoft.com docs?

This repository is referenced by this tutorial
which includes deployment, settings and usage instructions. If text or screenshot need to change in the tutorial,
check the box below and notify the tutorial author. A Microsoft employee can do this for you if you're an external contributor.

[ ] Yes
[X] No

Type of change

[X] Bugfix
[ ] Feature
[ ] Code style update (formatting, local variables)
[ ] Refactoring (no functional changes, no api changes)
[ ] Documentation content changes
[ ] Other... Please describe:

Code quality checklist

See CONTRIBUTING.md for more details.

• The current tests all pass (python -m pytest).
• I added tests that prove my fix is effective or that my feature works
• I ran python -m pytest --cov to verify 100% coverage of added lines
• I ran python -m mypy to check for type errors
• I either used the pre-commit hooks or ran ruff and black manually on my code.

[pamelafox]

I also added "system:" to each Prompty file. That's not strictly required for the Prompty python package, but Azure AI Foundry expects it when you import a Prompty file into the Chat playground.

Copilot reviewed 5 out of 13 changed files in this pull request and generated no comments.

Files not reviewed (8)

• app/backend/approaches/prompts/ask_answer_question.prompty: Language not supported
• app/backend/approaches/prompts/ask_answer_question_vision.prompty: Language not supported
• app/backend/approaches/prompts/chat_answer_question.prompty: Language not supported
• app/backend/approaches/prompts/chat_answer_question_vision.prompty: Language not supported
• tests/snapshots/test_app/test_ask_prompt_template/client0/result.json: Language not supported
• tests/snapshots/test_app/test_ask_prompt_template/client1/result.json: Language not supported
• tests/snapshots/test_app/test_ask_prompt_template_concat/client0/result.json: Language not supported
• tests/snapshots/test_app/test_ask_prompt_template_concat/client1/result.json: Language not supported

[mattgotteiner]

Thanks for improving our test coverage here!