fix(agent): match channel_id api argument for set_status and set_suggested_prompts

[zimeg]

Summary

This PR follows #1441 and #1442 with updates to channel_id to match the API arguments for these methods:

• https://docs.slack.dev/reference/methods/assistant.threads.setStatus#arguments
• https://docs.slack.dev/reference/methods/assistant.threads.setSuggestedPrompts/#arguments

I forget if this was meant to match the chat_stream arguments, which is channel still, but matching the API arguments might make references most clear I think!

Category

• slack_bolt.App and/or its core components
• slack_bolt.async_app.AsyncApp and/or its core components

Requirements

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• 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 ./scripts/install_all_and_run_tests.sh after making the changes.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 90.67%. Comparing base (d789fac) to head (1edf454).
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1446   +/-   ##
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  Coverage   90.67%   90.67%           
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  Files         226      226           
  Lines        7205     7205           
=======================================
  Hits         6533     6533           
  Misses        672      672           

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[mwbrooks]

✅ Thanks for the detailed eye @zimeg!

👍🏻 I agree with your approach - consistency is important. If we're naming the helper methods similar to the original method, then we should keep the arguments consistent. Plus _id is just better 😉