resolved issue with primary domain not filling in in user templates

ListUsers/run.ps1

@@ -6,7 +6,7 @@ param($Request, $TriggerMetadata)
 $APIName = $TriggerMetadata.FunctionName
 Log-Request -user $request.headers.'x-ms-client-principal' -API $APINAME  -message "Accessed this API" -Sev "Debug"
 
-$selectlist = "id", "accountEnabled", "businessPhones", "city", "createdDateTime", "companyName", "country", "department", "displayName", "faxNumber", "givenName", "isResourceAccount", "jobTitle", "mail", "mailNickname", "mobilePhone", "onPremisesDistinguishedName", "officeLocation", "onPremisesLastSyncDateTime", "otherMails", "postalCode", "preferredDataLocation", "preferredLanguage", "proxyAddresses", "showInAddressList", "state", "streetAddress", "surname", "usageLocation", "userPrincipalName", "userType", "assignedLicenses", "onPremisesSyncEnabled", "LicJoined", "Aliasses"
+$selectlist = "id", "accountEnabled", "businessPhones", "city", "createdDateTime", "companyName", "country", "department", "displayName", "faxNumber", "givenName", "isResourceAccount", "jobTitle", "mail", "mailNickname", "mobilePhone", "onPremisesDistinguishedName", "officeLocation", "onPremisesLastSyncDateTime", "otherMails", "postalCode", "preferredDataLocation", "preferredLanguage", "proxyAddresses", "showInAddressList", "state", "streetAddress", "surname", "usageLocation", "userPrincipalName", "userType", "assignedLicenses", "onPremisesSyncEnabled", "LicJoined", "Aliasses", "primDomain"
 
 # Write to the Azure Functions log stream.
 Write-Host "PowerShell HTTP trigger function processed a request."
@@ -19,6 +19,7 @@ $GraphRequest = New-GraphGetRequest -uri "https://graph.microsoft.com/beta/users
     $_.Aliasses = $_.Proxyaddresses -join ", "
     $SkuID = $_.AssignedLicenses.skuid
     $_.LicJoined = ($ConvertTable | Where-Object { $_.guid -in $skuid }).'Product_Display_Name' -join ", "
+    $_.primDomain = ($_.userPrincipalName -split '@' | Select-Object -Last 1)
     $_
 }