Customer reports support for az devops cli on Azure DevOps Server 2020 is wrong.

> ### `az feedback` auto-generates most of the information requested below, as of CLI version 2.0.62

**Describe the bug**
Customer gets the message: I get the warning "The Azure DevOps Extension for the Azure CLI does not support Azure DevOps Server."
However, the command succeeds despite the warning.

When I exercised some commands against Azure DevOps Server 2020, I got the following messages:

az devops project list
The requested resource requires user authentication: http://2020-rtw/defaultcollection/_apis

az boards area project list --output table
Command group 'boards area' is in preview. It may be changed/removed in a future release.
The requested resource requires user authentication: http://2020-rtw/defaultcollection/_apis

**To Reproduce**

**Expected behavior**

**Environment summary**

**Additional context**
az version
{
"azure-cli": "2.32.0",
"azure-cli-core": "2.32.0",
"azure-cli-telemetry": "1.0.6",
"extensions": {
"azure-devops": "0.22.0"
}
}

Version I ran against Azure DevOps Server 2020:

az version
{
"azure-cli": "2.10.1",
"azure-cli-command-modules-nspkg": "2.0.3",
"azure-cli-core": "2.10.1",
"azure-cli-nspkg": "3.0.4",
"azure-cli-telemetry": "1.0.4",
"extensions": {
"azure-devops": "0.18.0"
}
}