Auto merge of #113677 - bryangarza:unevaluated-const-ice_issue-110892, r=davidtwco

Safe Transmute: Fix ICE (due to UnevaluatedConst)

This patch updates the code that looks at the `Assume` type when evaluating if transmutation is possible. An ICE was being triggered in the case that the `Assume` parameter contained an unevaluated const (in this test case, due to a function with missing parameter names).

Fixes #110892

Author: bors