Addressed bugbot review comment in fa7d6352c:
Problem: _handle_error re-raised ConnectedAccountNotFoundError, which worked for the parallel path (_test_single_action has a handler) but broke the non-parallel path (create_and_run had no handler — exception propagated uncaught, losing the is_auth_issue flag).
Fix:
_handle_errorno longer re-raises — it's now a pure error-to-result converter_run_commoncatchesConnectedAccountNotFoundErrorseparately (before genericexcept Exception) and re-raises, so callers decide how to handle itcreate_and_run(non-parallel path) now catches it and returnsActionTestResult(is_auth_issue=True)
Added test test_create_and_run_returns_auth_result that validates the non-parallel path handles this correctly.