Remove deprecated --include-classic-administrators from Azure CLI command

[Copilot]

Azure CLI 2.73.0+ removed the --include-classic-administrators parameter, causing the script to fail. Reference: Azure/azure-cli#27199

Changes

Line 210 - Remove deprecated parameter:

# Before
$adminroles = (az role assignment list --include-classic-administrators) | ConvertFrom-Json

# After  
$adminroles = (az role assignment list) | ConvertFrom-Json

Line 216 - Align fallback role check with primary check:

# Before
if (($($role.scope) -eq "/subscriptions/$($aicfg.SubscriptionId)") -and ($role.roleDefinitionName -match 'Administrator'))

# After
if (($($role.scope) -eq "/subscriptions/$($aicfg.SubscriptionId)") -and ($role.roleDefinitionName -match 'Owner'))

Lines 208-209 - Update comments and messages to reflect RBAC-only behavior.

The fallback check preserves CSP subscription workaround (issue #15261) while using consistent role criteria.

Original prompt

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This section details on the original issue you should resolve

<issue_title>[BUG] AksEdgeAzureSetup.ps1 should remove --include-classic-administrators</issue_title>
<issue_description>In tools/scripts/AksEdgeAzureSetup/AksEdgeAzureSetup.ps1 line 204 reads $adminroles = (az role assignment list --include-classic-administrators) | ConvertFrom-Json. Azure CLI dropped --include-classic-administrators parameter in version 2.73.0 (May 20, 2025). See: Azure/azure-cli#27199. This results in an error being thrown if a more recent version of Azure CLI has been installed. </issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes [BUG] AksEdgeAzureSetup.ps1 should remove --include-classic-administrators #256

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