Alias: not working in repository reference in Chart.yaml

[ffppmm]

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

https://helm.sh/docs/chart_best_practices/dependencies/#repository-urls

If the repository has been added to the repository index file, the repository name can be used as an alias of URL. Use alias: or @ followed by repository names.

But in ArgoCD Code only @ ist considered, see the if.
https://github.com/argoproj/argo-cd/blob/master/reposerver/repository/repository.go#L1020

To Reproduce

Create a Chart.yaml with dependency repository: "alias:my-repo"

apiVersion: v2
name: my-app
version: 0.1
description: my-app
dependencies:
- name: some-dep
  version: 0.2.17
  repository: 'alias:my-repo'

Expected behavior

Repository works with helm dependency build

Version
v2.8.4
v2.7.14
Logs

Unable to save changes: application spec for my-app is invalid: InvalidSpecError: Unable to generate manifests in my-app: rpc error: code = Unknown desc = `helm dependency build` failed exit status 1: Error: could not find protocol handler for: alias

As mentioned here:
#7436 (comment)

Looking forward to a fix,
Regards Philipp

[ffppmm]

Hi,
it "should" be a small change, but maybe somebody who is far more experienced in go, ArgoCD behavior/processes and how to contribute can make a pull request (the checklist is very long):
ffppmm@b5fa9ee

Regards Philipp

[ffppmm]

Maybe this issue is related: #7436

[mashanm]

Thanks @ffppmm for the PR. Hope it gets merged soon! I guess the workaround is to use @reponame instead of alias:reponame while defining the dependency in the chart.