feat: break retry loop for 401 unauthorized errors in promptnode

[FHardow]

Related Issues

• fixes Don't retry on 401 in PromptNode #4380

Proposed Changes:

The PromptNode uses a openai/cohere gateway that has an exponential retry in case the request fails. These retries don't make a lot of sense when the API returns a 401 unauthorized code.

How did you test it?

None. Couldn't find a place where these would fit. Happy to add some if somebody could point me to a place.

Notes for the reviewer

Should we extend this so that we break the retry loop for all 4xx errors and catch specific ones, like the 401 or 429?

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 tests that demonstrate the correct behavior of the change
• I've used one of the conventional commit types for my PR title: fix:, feat:, build:, chore:, ci:, docs:, style:, refactor:, perf:, test:.
• I documented my code
• I ran pre-commit hooks and fixed any issue

[vblagoje]

@FHardow looks ok to me; I updated the linting, and CI should pass now. I'll let @silvanocerza take over

[silvanocerza]

Some small changes to make the logic more straightforward.

I also updated branch with main, it should solve the mypy issues.

[FHardow]

@silvanocerza thanks for taking care of this PR :)