Intent of TestReserve_HighPriority_OK

All 5 exact tests in this concept. Every test is marked by where it enters the hierarchy.

go.temporal.io/ 5 tests
- server/ 5 tests
  - common/ 5 tests
    
    quotas/ 5 tests
    
    TestPriorityStageRateLimiterSuite/ 5 tests
    
    go.temporal.io/server/common/quotas/TestPriorityStageRateLimiterSuite/TestReserve_HighPriority_OK Introduced here
    
    go.temporal.io/server/common/quotas/TestPriorityStageRateLimiterSuite/TestWait_HighPriority_NotExpired_WithExpiration_Cancelled Inherited TestWait_HighPriority_NotExpired_WithExpiration_Cancelled
    
    go.temporal.io/server/common/quotas/TestPriorityStageRateLimiterSuite/TestWait_HighPriority_NotExpired_WithExpiration_Error Inherited TestWait_HighPriority_NotExpired_WithExpiration_Error
    
    go.temporal.io/server/common/quotas/TestPriorityStageRateLimiterSuite/TestWait_HighPriority_NotExpired_WithExpiration_NoError Inherited TestWait_HighPriority_NotExpired_WithExpiration_NoError
    
    go.temporal.io/server/common/quotas/TestPriorityStageRateLimiterSuite/TestWait_HighPriority_NotExpired_WithoutExpiration Inherited TestWait_HighPriority_NotExpired_WithoutExpiration