fixed accidental removal of findname grid call

functions/public/Invoke-WPFUIElements.ps1

@@ -35,6 +35,8 @@ function Invoke-WPFUIElements {
     if (!$borderstyle -or !$HoverTextBlockStyle -or !$ColorfulToggleSwitchStyle) {
         throw "Failed to retrieve Styles using 'FindResource' from main window element."
     }
+    
+    $targetGrid = $window.FindName($targetGridName)
 
     if (!$targetGrid) {
         throw "Failed to retrieve Target Grid by name, provided name: $targetGrid"