gh-138859: Fix TypeError when there is a ParamSpec substitution with a default
#203034
| Job | Run time |
|---|---|
| 5s | |
| 6s | |
| 11s |
TypeError when there is a ParamSpec substitution with a default
#203034
| Job | Run time |
|---|---|
| 5s | |
| 6s | |
| 11s |