Golang cmd/go: breaking change in 1.23rc2 with version constraints in GOPATH mode [1.23 backport]

@matloob requested issue #68658 to be considered for backport to the next 1.23 minor release.

@gopherbot please backport this to 1.23. It's necessary to unbreak GOPATH mode with certain build tags

Comment From: matloob

cc @griesemer

Comment From: gopherbot

Change https://go.dev/cl/608935 mentions this issue: [release-branch.go1.23] go/types, types2: use max(fileVersion, go1.21) if fileVersion present

Comment From: gopherbot

Closed by merging CL 608935 (commit 7afe17bbdb961df3a7163f4d725bedc1c008571f) to release-branch.go1.23.