fix: context issue (#464)

# Pull Request

## Description

Fix context issue when no resource groups are present.

## License

By submitting this pull request, I confirm that my contribution is made
under the terms of the projects associated license.

Author: jaredfholgate

src/ALZ/Public/Remove-PlatformLandingZone.ps1

@@ -1023,6 +1023,8 @@ function Remove-PlatformLandingZone {
                 $funcRemoveDeploymentsForScope = $using:funcRemoveDeploymentsForScope
                 ${function:Remove-DeploymentsForScope} = $funcRemoveDeploymentsForScope
                 $TempLogFileForPlan = $using:TempLogFileForPlan
+                $throttleLimit = $using:ThrottleLimit
+                $planMode = $using:PlanMode
 
                 $subscription = $_
                 Write-ToConsoleLog "Finding resource groups for subscription: $($subscription.Name) (ID: $($subscription.Id))" -NoNewline
@@ -1060,9 +1062,6 @@ function Remove-PlatformLandingZone {
 
                     $shouldRetry = $true
 
-                    $throttleLimit = $using:ThrottleLimit
-                    $planMode = $using:PlanMode
-
                     while($shouldRetry) {
                         $shouldRetry = $false
                         $resourceGroupsToRetry = [System.Collections.Concurrent.ConcurrentBag[hashtable]]::new()