Intent of return_update_when_found_in_store

All 4 exact tests in this concept. Every test is marked by where it enters the hierarchy.

go.temporal.io/ 4 tests
- server/ 4 tests
  - service/ 4 tests
    
    history/ 4 tests
    
    workflow/ 4 tests
    
    update/ 4 tests
    
    TestFind/ 1 test
    
    go.temporal.io/server/service/history/workflow/update/TestFind/return_update_when_found_in_store Introduced here
    
    TestFindOrCreate/ 1 test
    
    go.temporal.io/server/service/history/workflow/update/TestFindOrCreate/find_stored_update Inherited find_stored_update
    
    TestNewRegistry/ 2 tests
    
    go.temporal.io/server/service/history/workflow/update/TestNewRegistry/registry_created_from_store_with_update_in_stateAccepted_but_non-running_workflow_contains_aborted_update Inherited registry.go ×1
    
    go.temporal.io/server/service/history/workflow/update/TestNewRegistry/registry_created_from_store_with_update_in_stateAccepted_contains_accepted_update Inherited registry_created_from_store_with_update_in_stateAccepted_contains_accepted_update