Intent of both_rate_limits_hit, global_rate_limit_hit

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
    
    frontend/ 2 tests
    
    TestRateLimitInterceptorProvider/ 2 tests
    
    go.temporal.io/server/service/frontend/TestRateLimitInterceptorProvider/both_rate_limits_hit Introduced here
    
    go.temporal.io/server/service/frontend/TestRateLimitInterceptorProvider/global_rate_limit_hit Introduced here