failed to verify certificate: x509: certificate is valid for localhost, dexserver, not argocd-dex-server.argocd.svc.cluster.local

[jbpin]

Describe the bug
When Enabling dex for OIDC, ArgoCD server can't talk to dex server because of the certificate is not valid.

 time="2024-12-03T16:41:29Z" level=warning msg="Failed to verify token: failed to verify token: token verification failed for all audiences: error for aud \"argo-cd\": Failed to query provider \"https://argocd.domain.com/api/dex\": Get \"https://argocd-dex-server.argocd.svc.cluster.local:5556/api/dex/.well-known/openid-configuration\": tls: failed to verify certificate: x509: certificate is valid for localhost, dexserver, not argocd-dex-server.argocd.svc.cluster.local, error for aud \"argo-cd-cli\": Failed to query provider \"https://argocd.domain.com/api/dex\": Get \"https://argocd-dex-server.argocd.svc.cluster.local:5556/api/dex/.well-known/openid-configuration\": tls: failed to verify certificate: x509: certificate is valid for localhost, dexserver, not argocd-dex-server.argocd.svc.cluster.local"

To Reproduce
Install dex with the operator using oidc configuration
add extraArgs on server --dex-server-plaintext to view the error

Expected behavior
Expect argocd server to be able to talk to dex server deploy by the operator. Also the operator seems to force https in code.

argocd-operator/controllers/argocd/deployment.go

Line 354 in 0ca1920

func getDexServerAddress(cr *argoproj.ArgoCD) string {