feat(async/unstable): add support for AbortSignal in pooledMap

[tomas-zijdemans]

No description provided.

[codecov]

Codecov Report

❌ Patch coverage is 95.40230% with 4 lines in your changes missing coverage. Please review.
✅ Project coverage is 94.17%. Comparing base (4936f23) to head (8e7ed40).

Files with missing lines	Patch %	Lines
async/unstable_pool.ts	95.40%	4 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #7014   +/-   ##
=======================================
  Coverage   94.16%   94.17%           
=======================================
  Files         618      619    +1     
  Lines       48802    48889   +87     
  Branches     8601     8625   +24     
=======================================
+ Hits        45954    46040   +86     
- Misses       2779     2780    +1     
  Partials       69       69           

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