Backport "Use result of lambda type of implicit in CheckUnused" to 3.7.2#23545

WojciechMazur merged 5 commits intorelease-3.7.2scala/scala3:release-3.7.2from

backport-release-3.7.2-23497scala/scala3:backport-release-3.7.2-23497Copy head branch name to clipboard