Intent of TestAssign_HighPriorityTaskTypes, TestAssign_ActiveNamespaceHighPriority

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
    
    queues/ 2 tests
    
    TestPriorityAssignerSuite/ 2 tests
    
    go.temporal.io/server/service/history/queues/TestPriorityAssignerSuite/TestAssign_ActiveNamespaceHighPriority Introduced here
    
    go.temporal.io/server/service/history/queues/TestPriorityAssignerSuite/TestAssign_HighPriorityTaskTypes Introduced here