revert change to event dispatcher

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

@@ -8,7 +8,6 @@
   } from "builderStore/dataBinding"
   import BindingPanel from "components/common/bindings/BindingPanel.svelte"
   import { capitalise } from "helpers"
-  import { createEventDispatcher } from "svelte"
 
   export let label = ""
   export let bindable = true
@@ -18,11 +17,11 @@
   export let type = ""
   export let value = null
   export let props = {}
+  export let onChange = () => {}
 
   let bindingDrawer
   let anchor
   let valid
-  let dispatch = createEventDispatcher()
 
   $: bindableProperties = getBindableProperties(
     $currentAsset,
@@ -54,9 +53,9 @@
     }
 
     if (typeof innerVal === "string") {
-      dispatch("change", replaceBindings(innerVal))
+      onChange(replaceBindings(innerVal))
     } else {
-      dispatch("change", innerVal)
+      onChange(innerVal)
     }
   }