[3.14] gh-135839: Fix `module_traverse` and `module_clear` in `_interpchannelsmodule` (GH-135840) (#135918)

gh-135839: Fix `module_traverse` and `module_clear` in `_interpchannelsmodule` (GH-135840)
(cherry picked from commit dd59c786cfb1018eb5abe877bfa7265ea9a3c2b9)

Co-authored-by: sobolevn <mail@sobolevn.me>