Fix issue with navigation links editor mutating real component structure

packages/builder/src/components/design/PropertiesPanel/PropertyControls/NavigationEditor/NavigationEditor.svelte

@@ -2,13 +2,15 @@
   import { Button, ActionButton, Drawer } from "@budibase/bbui"
   import { createEventDispatcher } from "svelte"
   import NavigationDrawer from "./NavigationDrawer.svelte"
+  import { cloneDeep } from "lodash/fp"
 
   export let value = []
   let drawer
+  let links = cloneDeep(value)
 
   const dispatch = createEventDispatcher()
   const save = () => {
-    dispatch("change", value)
+    dispatch("change", links)
     drawer.hide()
   }
 </script>
@@ -19,5 +21,5 @@
     Configure the links in your navigation bar.
   </svelte:fragment>
   <Button cta slot="buttons" on:click={save}>Save</Button>
-  <NavigationDrawer slot="body" bind:links={value} />
+  <NavigationDrawer slot="body" bind:links />
 </Drawer>