feat(web-api): add loading_messages to assistant.threads.setStatus method

[zimeg]

Summary

This PR adds an optional loading_messages attribute to the assistant.threads.setStatus method.

Testing

WIP.

Category

• slack_sdk.web.WebClient (sync/async) (Web API client)

Requirements

• I've read and understood the Contributing Guidelines and have done my best effort to follow them.
• I've read and agree to the Code of Conduct.
• I've run python3 -m venv .venv && source .venv/bin/activate && ./scripts/run_validation.sh after making the changes.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
⚠️ Please upload report for BASE (ai-apps@f60e37c). Learn more about missing BASE report.
✅ All tests successful. No failed tests found.

Additional details and impacted files

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##             ai-apps    #1746   +/-   ##
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  Files              ?      113           
  Lines              ?    12916           
  Branches           ?        0           
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  Hits               ?    10972           
  Misses             ?     1944           
  Partials           ?        0           

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[srtaalej]

lgtm

[mwbrooks]

✅ Everything looks good on my side! Great work, again, @zimeg! 🙇🏻

🧪 We discussed offline to add the tests later, since this feature isn't fully complete. We have a task, so tests will be added before this is brought into main.

@srtaalej feel empowered to hit that Approve button if you're confident in the code changes 😄 @zimeg deserves multiple approvals from time-to-time 😉

[mwbrooks]

praise: Oof, thanks for catching this typo (and the ones following).

[zimeg]

@mwbrooks Thank you! I was debating opening a separate PR but am wanting to do a much more thorough pass for such 📚

[mwbrooks]

No worries, since it's internal cleanup and the PR is small, it didn't distract from the core changes in the PR 😄 You made the right call!

[zimeg]

@srtaalej @mwbrooks I appreciate the reviews always! Let's get this merged to match method definitions in ongoing development 🤖