Key property group components so that they fully remount on component change

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

@@ -25,7 +25,7 @@
 <DetailSummary name={`${name}${changed ? ' *' : ''}`} on:open show={open} thin>
   {#if open}
     <div>
-      {#each properties as prop}
+      {#each properties as prop (`${componentInstance._id}-${prop.key}`)}
         <PropertyControl
           bindable={false}
           label={`${prop.label}${hasPropChanged(style, prop) ? ' *' : ''}`}