Only retry sandbox postMessage on TimeoutErrors

[mnholtz]

What does this PR do?

• Closes Invalid JS or JS that throws an error shows a timeout error #8821
• We were retrying the sandbox message for for e.g. failed javascript errors instead of throwing the original error

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 4 lines in your changes missing coverage. Please review.

Project coverage is 74.17%. Comparing base (8318d74) to head (1aeefad).
Report is 62 commits behind head on main.

Files	Patch %	Lines
src/sandbox/messenger/api.ts	0.00%	4 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #8822      +/-   ##
==========================================
- Coverage   74.24%   74.17%   -0.08%     
==========================================
  Files        1332     1332              
  Lines       40817    40958     +141     
  Branches     7634     7668      +34     
==========================================
+ Hits        30306    30382      +76     
- Misses      10511    10576      +65     

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Playwright test results

 94 passed
 2 flaky
 4 skipped

Details

 Open report ↗︎
 100 tests across 33 suites
 21 minutes, 7 seconds
 1aeefad
 For more information on how to debug and view this report, see our readme

Flaky tests

edge › tests/pageEditor/brickActions.spec.ts › brick actions panel behavior
chrome › tests/regressions/welcomeStarterBricks.spec.ts › #8740: can view the starter mods on the pixiebrix.com/welcome page

Skipped tests

chrome › tests/regressions/doNotCloseSidebarOnPageEditorSave.spec.ts › #8104: Do not automatically close the sidebar when saving in the Page Editor
edge › tests/regressions/doNotCloseSidebarOnPageEditorSave.spec.ts › #8104: Do not automatically close the sidebar when saving in the Page Editor
chrome › tests/runtime/googleSheetsIntegration.spec.ts › can activate a google spreadsheet mod with config options
edge › tests/runtime/googleSheetsIntegration.spec.ts › can activate a google spreadsheet mod with config options