Intent of old_deployment_data:_ramp_to_unversioned_100%

All 3 exact tests in this concept. Every test is marked by where it enters the hierarchy.

go.temporal.io/ 3 tests
- server/ 3 tests
  - common/ 3 tests
    
    worker_versioning/ 3 tests
    
    TestCalculateTaskQueueVersioningInfo/ 3 tests
    
    go.temporal.io/server/common/worker_versioning/TestCalculateTaskQueueVersioningInfo/old_deployment_data:_ramp_100% Inherited old_deployment_data:_ramp_100%, old_deployment_data:_two_current_+_two_ramping
    
    go.temporal.io/server/common/worker_versioning/TestCalculateTaskQueueVersioningInfo/old_deployment_data:_ramp_to_unversioned_100% Introduced here
    
    go.temporal.io/server/common/worker_versioning/TestCalculateTaskQueueVersioningInfo/old_deployment_data:_two_current_+_two_ramping Inherited old_deployment_data:_ramp_100%, old_deployment_data:_two_current_+_two_ramping