Add opt-in CodeTeams test helpers #116

Job	Run time
call-workflow-from-shared-config / Type Check	10s
call-workflow-from-shared-config / Run tests: Ruby 3.2	13s
call-workflow-from-shared-config / Run tests: Ruby 3.3	18s
call-workflow-from-shared-config / Run tests: Ruby 3.4	22s
call-workflow-from-shared-config / Linter	10s
call-workflow-from-shared-config / notify_on_failure	-1s
	1m 12s

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