GH-137630: Convert _interpchannels to use Argument Clinic
#204767
| Job | Run time |
|---|---|
| 4s | |
| 3s | |
| 7s |
_interpchannels to use Argument Clinic
#204767
| Job | Run time |
|---|---|
| 4s | |
| 3s | |
| 7s |