[release-branch.go1.18] cmd/compile: only check implicit dots for method call enabled...

[release-branch.go1.18] cmd/compile: only check implicit dots for method call enabled by a type bound

Fixes #53723

Change-Id: Ibad64f5c4af2112deeb0a9ecc9c589b17594bd05
Reviewed-on: https://go-review.googlesource.com/c/go/+/414836
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Keith Randall <khr@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Reviewed-on: https://go-review.googlesource.com/c/go/+/416155
Reviewed-by: Keith Randall <khr@google.com>
Reviewed-by: Heschi Kreinick <heschi@google.com>