Intent of TestLoadAndSortActivityTimers_FirstScheduledTime, TestLoadAndSortActivityTimers_One_Scheduled_NotStarted

All 6 exact tests in this concept. Every test is marked by where it enters the hierarchy.

go.temporal.io/ 6 tests
- server/ 6 tests
  - service/ 6 tests
    
    history/ 6 tests
    
    workflow/ 6 tests
    
    TestTimerSequenceSuite/ 6 tests
    
    go.temporal.io/server/service/history/workflow/TestTimerSequenceSuite/TestCreateNextActivityTimer_NotCreated_AfterWorkflowExpiry Inherited TestCreateNextActivityTimer_NotCreated_AfterWorkflowExpiry
    
    go.temporal.io/server/service/history/workflow/TestTimerSequenceSuite/TestCreateNextActivityTimer_NotCreated_BeforeWorkflowExpiry Inherited TestCreateNextActivityTimer_NotCreated_BeforeWorkflowExpiry
    
    go.temporal.io/server/service/history/workflow/TestTimerSequenceSuite/TestCreateNextActivityTimer_NotCreated_NoWorkflowExpiry Inherited TestCreateNextActivityTimer_NotCreated_NoWorkflowExpiry
    
    go.temporal.io/server/service/history/workflow/TestTimerSequenceSuite/TestLoadAndSortActivityTimers_FirstScheduledTime Introduced here
    
    go.temporal.io/server/service/history/workflow/TestTimerSequenceSuite/TestLoadAndSortActivityTimers_Multiple Inherited TestLoadAndSortActivityTimers_Multiple
    
    go.temporal.io/server/service/history/workflow/TestTimerSequenceSuite/TestLoadAndSortActivityTimers_One_Scheduled_NotStarted Introduced here