Intent of timeout_nonretryable_error_-_valid_type

All 1 exact test in this concept. Every test is marked by where it enters the hierarchy.

go.temporal.io/ 1 test
- server/ 1 test
  - common/ 1 test
    
    retrypolicy/ 1 test
    
    TestValidateRetryPolicy/ 1 test
    
    go.temporal.io/server/common/retrypolicy/TestValidateRetryPolicy/timeout_nonretryable_error_-_valid_type Introduced here