Intent of TestRetryActivity_ScheduleToCloseTimeout_should_return_timeout, TestRetryActivity_ScheduleToStartTimeout_should_return_timeout

All 2 exact tests in this concept. Every test is marked by where it enters the hierarchy.

go.temporal.io/ 2 tests
- server/ 2 tests
  - service/ 2 tests
    
    history/ 2 tests
    
    workflow/ 2 tests
    
    TestMutableStateRetryActivitySuite/ 2 tests
    
    go.temporal.io/server/service/history/workflow/TestMutableStateRetryActivitySuite/TestRetryActivity_ScheduleToCloseTimeout_should_return_timeout Introduced here
    
    go.temporal.io/server/service/history/workflow/TestMutableStateRetryActivitySuite/TestRetryActivity_ScheduleToStartTimeout_should_return_timeout Introduced here