make codegen-local error: Could not make proto path relative: No such file or directory

[reggie-k]

Checklist:

• I've searched in the docs and FAQ for my answer: https://bit.ly/argocd-faq.
• I've included steps to reproduce the bug.
• I've pasted the output of argocd version.

Describe the bug

Upon running make codegen local, I receive: Could not make proto path relative: 025/01/13 11:40:17 protoc -I . -I /Users/codefresh/go/src/ -I /Users/codefresh/GolandProjects/argo-cd/vendor -I /Users/codefresh/GolandProjects/argo-cd/dist/protoc-include --gogo_out=/Users/codefresh/go/src/ /Users/codefresh/go/src/github.com/argoproj/argo-cd/v3/pkg/apis/application/v1alpha1/generated.proto
2025/01/13 11:40:17 Could not make proto path relative: /Users/codefresh/go/src/github.com/argoproj/argo-cd/v3/pkg/apis/application/v1alpha1/generated.proto: No such file or directory

The reason is that codegen-local is using ~/go/src/ ($GOPATH) during run, and in my case, while the Argo CD repo was cloned under ~/GolandProjects/argo-cd, there also existed an older clone inder $GOPATH, so the old files in $GOPATH were used.
While investigating this, it became clear that we don't require the repo to be cloned under $GOPATH anymore, it can be cloned anywhere, and that GOPATH should not be used unless the active repo WAS cloned there initially.
So the docs should be updated with removing the requirement for $GOPATH and the above clarification.
To Reproduce

Clone the Argo CD repo to any path NOT under ~/go/src/ .
Then clone the Argo CD repo to ~/go/src, and checkout some really old release branch.
run make codegen-local on the FIRST repo and observe it fails.

Additionally, the docs for contributors about the available make targets are not up to date, so it is beneficial to update those.

Expected behavior

make codegen-local finishes successfully

Screenshots

Version
Latest commit on master branch

v2.14.0+4d98359

Logs

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