Intent of Top-level_fields_with_snake_case

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
    
    activityoptions/ 1 test
    
    TestMergeActivityOptionsAcceptance/ 1 test
    
    go.temporal.io/server/common/activityoptions/TestMergeActivityOptionsAcceptance/Top-level_fields_with_snake_case Introduced here