Intent of TestUpdateShardInfo_PersistsBeforeInterval_WhenEnoughTasksCompleted

All 4 exact tests in this concept. Every test is marked by where it enters the hierarchy.

go.temporal.io/ 4 tests
- server/ 4 tests
  - service/ 4 tests
    
    history/ 4 tests
    
    shard/ 4 tests
    
    TestShardContextSuite/ 4 tests
    
    go.temporal.io/server/service/history/shard/TestShardContextSuite/TestUpdateShardInfo_FirstUpdate Inherited TestUpdateShardInfo_FirstUpdate
    
    go.temporal.io/server/service/history/shard/TestShardContextSuite/TestUpdateShardInfo_OnlyPersistsAfterInterval_WhenTaskCheckingDisabled Inherited TestUpdateShardInfo_PersistsAfterInterval_RegardlessOfTasksCompleted, TestUpdateShardInfo_OnlyPersistsAfterInterval_WhenTaskCheckingDisabled
    
    go.temporal.io/server/service/history/shard/TestShardContextSuite/TestUpdateShardInfo_PersistsAfterInterval_RegardlessOfTasksCompleted Inherited TestUpdateShardInfo_PersistsAfterInterval_RegardlessOfTasksCompleted, TestUpdateShardInfo_OnlyPersistsAfterInterval_WhenTaskCheckingDisabled
    
    go.temporal.io/server/service/history/shard/TestShardContextSuite/TestUpdateShardInfo_PersistsBeforeInterval_WhenEnoughTasksCompleted Introduced here