feat: Add AzureOpenAIResponsesChatGenerator

[sjrl]

Related Issues

• fixes Add an AzureOpenAIResponsesChatGenerator based on the OpenAIResponsesChatGenerator #9986

Proposed Changes:

• Adds AzureOpenAIResponsesChatGenerator which inherits from OpenAIResponsesChatGenerator to use Azure OpenAI's Responses API

How did you test it?

• Added unit tests and integration tests

Notes for the reviewer

• As a heads up Azure OpenAI officially recommends using the OpenAI client to connect to Azure now so we do run super().__init__() in the component. It still makes sense to make a dedicated component since specifying the base_url is a little clunky and it's easier to keep the old parameter azure_deployment which is then used to create the base_url.

Checklist

• I have read the contributors guidelines and the code of conduct
• I have updated the related issue with new insights and changes
• I added unit tests and updated the docstrings
• I've used one of the conventional commit types for my PR title: fix:, feat:, build:, chore:, ci:, docs:, style:, refactor:, perf:, test: and added ! in case the PR includes breaking changes.
• I documented my code
• I ran pre-commit hooks and fixed any issue

[mpangrazzi]

Looks already good! Left some minor comments.

Also, I think it would be nice to have a live run integration test with reasoning model (like gpt-5-nano), WDYT?

[coveralls]

Pull Request Test Coverage Report for Build 19134929429

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.01%) to 91.578%

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Totals
Change from base Build 19134808494:	0.01%
Covered Lines:	13711
Relevant Lines:	14972

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💛 - Coveralls

[sjrl]

Looks already good! Left some minor comments.

Also, I think it would be nice to have a live run integration test with reasoning model (like gpt-5-nano), WDYT?

@mpangrazzi I was able to test with gpt-5-mini using a separate Azure deployment than the one we have in our CI (our CI doesn't have access to GPT-5) and the integration test test_live_run_with_tools passed. If there are no complaints on your end I'll go ahead and merge as-is and we can add a proper integration test in the future.

[mpangrazzi]

@sjrl sounds good!

[sjrl]

@mpangrazzi feel free to approve ;)