GH-137630: Convert _interpchannels to use Argument Clinic
#204768
| Job | Run time |
|---|---|
| 5s | |
| 3s | |
| 8s |
_interpchannels to use Argument Clinic
#204768
| Job | Run time |
|---|---|
| 5s | |
| 3s | |
| 8s |