[release-branch.go1.18] go/types, types2: preserve parent scope when substituting receivers
For #51920
Fixes #52007
Change-Id: I29e44a52dabee5c09e1761f9ec8fb2e8795f8901
Reviewed-on: https://go-review.googlesource.com/c/go/+/395538
Trust: Robert Findley <rfindley@google.com>
Run-TryBot: Robert Findley <rfindley@google.com>
Reviewed-by: Robert Griesemer <gri@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
(cherry picked from commit
9b90838712856cad86504a526e566f963f86c04e)
Reviewed-on: https://go-review.googlesource.com/c/go/+/395680