fix: async iterator race condition

[DylanPiercey]

No description provided.

[changeset-bot]

🦋 Changeset detected

Latest commit: 3c215fb

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

This PR includes changesets to release 1 package

Name	Type
marko	Patch

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[codecov]

Codecov Report

Attention: Patch coverage is 52.27273% with 21 lines in your changes missing coverage. Please review.

Project coverage is 87.01%. Comparing base (586d378) to head (3c215fb).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
packages/marko/src/runtime/html/AsyncStream.js	52.27%	21 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2402      +/-   ##
==========================================
- Coverage   87.05%   87.01%   -0.05%     
==========================================
  Files         347      347              
  Lines       39232    39262      +30     
  Branches     2535     2535              
==========================================
+ Hits        34155    34162       +7     
- Misses       5048     5071      +23     
  Partials       29       29              

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