Add dynamic license type label to policy display names

Include the selected target license type in the policy definition
and assignment display names for clarity in the Azure Portal.

Format: Configure Arc-enabled SQL Server (<platform>) license type to '<label>'
Examples:
- Configure Arc-enabled SQL Server (All platforms) license type to 'Pay-as-you-go'
- Configure Arc-enabled SQL Server (Linux) license type to 'License With Software Assurance'

The azurepolicy.json description remains generic since the display
name is overridden by the script at definition creation time.

Author: claestom

samples/manage/azure-arc-enabled-sql-server/compliance/arc-sql-license-type-compliance/scripts/deployment.ps1

@@ -60,8 +60,9 @@ else {
 $PolicyDefinitionName = "activate-sql-arc-$LicenseToken-$PlatformToken"
 $PolicyAssignmentName = "sql-arc-$LicenseToken-$PlatformToken"
 
-$PolicyDefinitionDisplayName = "Configure Arc-enabled SQL Server ($PlatformLabel) license type"
-$PolicyAssignmentDisplayName = "Configure Arc-enabled SQL Server ($PlatformLabel) license type"
+$LicenseTypeLabel = if ($TargetLicenseType -eq 'PAYG') { 'Pay-as-you-go' } else { 'License With Software Assurance' }
+$PolicyDefinitionDisplayName = "Configure Arc-enabled SQL Server ($PlatformLabel) license type to '$LicenseTypeLabel'"
+$PolicyAssignmentDisplayName = "Configure Arc-enabled SQL Server ($PlatformLabel) license type to '$LicenseTypeLabel'"
 
 #Create policy definition
 New-AzPolicyDefinition `