fix: Improve executor error messaging

[FrederikBolding]

Improve error messaging for execution service errors to be more granular and help indicate what the problem could be.

Introduces a diagnostic execution status for each worker in the execution service which is used to determine the error message.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 98.24%. Comparing base (46c9eb9) to head (56a2475).
Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #3521   +/-   ##
=======================================
  Coverage   98.24%   98.24%           
=======================================
  Files         408      408           
  Lines       11520    11537   +17     
  Branches     1795     1797    +2     
=======================================
+ Hits        11318    11335   +17     
  Misses        202      202           

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.