Fix role being stale when creating screens

packages/builder/src/components/design/NavigationPanel/ScreenWizard.svelte

@@ -12,11 +12,12 @@
   let screenName = ""
   let url = ""
   let selectedScreens = []
-  let roleId = $selectedAccessRole || "BASIC"
   let showProgressCircle = false
   let routeError
   let createdScreens = []
 
+  $: roleId = $selectedAccessRole || "BASIC"
+
   const createScreens = async () => {
     for (let screen of selectedScreens) {
       let test = screen.create()