gh-142651: use NonCallableMock._lock for thread safety of call_count
#226547
| Job | Run time |
|---|---|
| 4s | |
| 4s | |
| 8s |
NonCallableMock._lock for thread safety of call_count
#226547
| Job | Run time |
|---|---|
| 4s | |
| 4s | |
| 8s |