cmd/compile: changing a hot concrete method to interface method triggers a PGO ICE [1.22 backport]

[gopherbot]

@prattmic requested issue #67016 to be considered for backport to the next 1.22 minor release.

@gopherbot Please backport to 1.22. These compiler failures can happen across otherwise benign refactors, where the profile was collected prior to the refactor.

[gopherbot]

Change https://go.dev/cl/581438 mentions this issue: [release-branch.go1.22] cmd/compile: bail PGO method lookup on interface types

[gopherbot]

Closed by merging a7ff78d to release-branch.go1.22.