Intent of TestMigrateSchedule_FromVisibility_DryRun

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
  - tools/ 1 test
    
    tdbg/ 1 test
    
    go.temporal.io/server/tools/tdbg/TestMigrateSchedule_FromVisibility_DryRun Introduced here