[WhitWaldo]

Description

Fixed scheduling bug so cancellation of one caller cannot strand accepted turns or mask the actor's original exception. Inline turn handoff and post-enqueue scheduling not run independently of caller cancellation and each turn retains its own cancellation token.

Thank you @olitomlinson for surfacing the bug in Dapr.Actors that led to discovering this issue.

Issue reference

We strive to have all PR being opened based on an issue, where the problem or feature have been discussed prior to implementation.

Please reference the issue this PR will close: #[issue number]

Checklist

Please make sure you've completed the relevant tasks for this PR, out of the following list:

• Code compiles correctly
• Created/updated tests
• Extended the documentation

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 65.18%. Comparing base (1b422ec) to head (ab3ea66).

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1936      +/-   ##
==========================================
- Coverage   65.19%   65.18%   -0.01%     
==========================================
  Files         370      370              
  Lines       10766    10766              
  Branches     1262     1262              
==========================================
- Hits         7019     7018       -1     
- Misses       3408     3410       +2     
+ Partials      339      338       -1     

Flag	Coverage Δ
net10.0	65.14% <ø> (-0.01%)	⬇️

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