Intent of ignores_zero_and_past_candidates

All 3 exact tests in this concept. Every test is marked by where it enters the hierarchy.

go.temporal.io/ 3 tests
- server/ 3 tests
  - service/ 3 tests
    
    history/ 3 tests
    
    workflow/ 3 tests
    
    TestTimeSkippingTransition/ 3 tests
    
    earliest_future_time/ 1 test
    
    go.temporal.io/server/service/history/workflow/TestTimeSkippingTransition/earliest_future_time/ignores_zero_and_past_candidates Introduced here
    
    fast-forward_fallback_and_gating/ 1 test
    
    go.temporal.io/server/service/history/workflow/TestTimeSkippingTransition/fast-forward_fallback_and_gating/past_target_disables_as_a_bare_signal Inherited past_target_disables_as_a_bare_signal
    
    go.temporal.io/server/service/history/workflow/TestTimeSkippingTransition/nil_safe Inherited nil_safe