A wire-channel mapping issue in Clus::Facade::fill_wrap_points()

[Ningclover]

Here the channel number got from the wire index seems not right.

https://github.com/WireCell/wire-cell-toolkit/blob/apply-pointcloud/clus/src/DynamicPointCloud.cxx#L730

Details can be found here.
https://indico.bnl.gov/event/28967/contributions/110393/attachments/63549/109053/20250716.pdf