Fix add component button in empty screens

packages/builder/src/pages/builder/app/[application]/design/[screenId]/_components/AppPreview.svelte

@@ -20,7 +20,7 @@
   } from "@budibase/bbui"
   import ErrorSVG from "@budibase/frontend-core/assets/error.svg?raw"
   import { findComponent, findComponentPath } from "builderStore/componentUtils"
-  import { isActive, goto } from "@roxi/routify"
+  import { isActive, goto, url } from "@roxi/routify"
   import { Screen } from "builderStore/store/screenTemplates/utils/Screen"
 
   let iframe
@@ -186,7 +186,7 @@
           $goto("./navigation")
         }
       } else if (type === "request-add-component") {
-        $goto("./components/new")
+        $goto(`./components/${$selectedComponent?._id}/new`)
       } else if (type === "highlight-setting") {
         store.actions.settings.highlight(data.setting)