mypy

3c09b324 - Filter overload items based on self type during type inference (#17873)

Filter overload items based on self type during type inference (#17873) Fix type argument inference for overloaded functions with explicit self types. Filter out the overload items based on the declared and actual types of self. The implementation is best effort and does the filtering only in simple cases, to reduce the risk of regressions (primarily performance, but I worry also about infinite recursion). I added a fast path for the typical case, since without it the filtering was quite expensive. Note that the overload item filtering already worked in many contexts. This only improves it in specific contexts -- at least when inferring generic protocol compatibility. This is a more localized (and thus lower-risk) fix compared to #14975 (thanks @tyralla!). #14975 might still be a good idea, but I'm not comfortable merging it now, and I want a quick fix to unblock the mypy 1.12 release. Fixes #15031. Fixes #17863. Co-authored by @tyralla.