fix(socket-mode): terminate closing connections earlier if normal close responses fail

[zimeg]

Summary

This PR terminates closing connections earlier if normal close responses fail for openclaw/openclaw#72808 🦞

We hope to attempt a reconnection sooner because these reconnection issues can occur for various reasons, including during a server swap on the backend:

📚 https://docs.slack.dev/apis/events-api/using-socket-mode#disconnect

Preview

Before

before.mov

After

after.mov

Reviewers

Please build this branch and test with a Bolt app ⚡

[INFO]  bolt-app ⚡️ Bolt app is running!

After connecting with Socket Mode, turn internet off, grab a glass of water, and turn the internet back on. A reconnection should succeed!

Notes

• Sometimes num_connections returns as "2" instead of "1" after reconnections. I believe this can happen both before and after these changes, but soon resolves after Slack decides the connection is idle 🔬
• We might prefer the sooner termination because errors in initial retries are not common to resolve if network issues exist. We prefer to attempt reconnecting sooner because of this!

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.

[changeset-bot]

🦋 Changeset detected

Latest commit: f1b9280

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@slack/socket-mode	Patch

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 87.38%. Comparing base (62c5a3f) to head (f1b9280).
⚠️ Report is 1 commits behind head on main.
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2565      +/-   ##
==========================================
- Coverage   87.41%   87.38%   -0.04%     
==========================================
  Files          62       62              
  Lines       10251    10256       +5     
  Branches      415      415              
==========================================
+ Hits         8961     8962       +1     
- Misses       1269     1273       +4     
  Partials       21       21              

Flag	Coverage Δ
cli-hooks	87.38% <100.00%> (-0.04%)	⬇️
cli-test	87.38% <100.00%> (-0.04%)	⬇️
logger	87.38% <100.00%> (-0.04%)	⬇️
oauth	87.38% <100.00%> (-0.04%)	⬇️
socket-mode	87.38% <100.00%> (-0.04%)	⬇️
web-api	87.38% <100.00%> (-0.04%)	⬇️
webhook	87.38% <100.00%> (-0.04%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

🚀 New features to boost your workflow:

• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.

[WilliamBergamin]

Nice work 💯

Left once comment on the tests but it should be none blocking

[WilliamBergamin]

Nice 💯

[zimeg]

@WilliamBergamin I appreciate the review and suggestions toward this change! Let's merge this now to release upcoming 🎁