BUG: Fix leaking clients in actor caller

[codingl2k1]

Background: If an actor is called from a thread and the thread exits after the call, the client will leak in the actor caller, and the corresponding channel will still be open.

This PR auto close the actor callers and channels that belongs to the exited thread.

What do these changes do?

Related issue number

Fixes #xxxx

Check code requirements

• tests added / passed (if needed)
• Ensure all linting tests pass

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 84.76%. Comparing base (d6465c9) to head (fca334a).
Report is 20 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #115      +/-   ##
==========================================
- Coverage   88.97%   84.76%   -4.22%     
==========================================
  Files          48       53       +5     
  Lines        4038     4626     +588     
  Branches      770      503     -267     
==========================================
+ Hits         3593     3921     +328     
- Misses        358      603     +245     
- Partials       87      102      +15     

Flag	Coverage Δ
unittests	84.54% <ø> (-4.27%)	⬇️

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[qinxuye]

LGTM