Style background of feedback popover white due to iframe boundary breaking theming

packages/builder/src/components/userInterface/Feedback/FeedbackNavLink.svelte

@@ -18,9 +18,11 @@
 <div class="container" bind:this={iconContainer} on:click={popover.show}>
   <i class="ri-feedback-line" class:highlight={$store.highlightFeedbackIcon} />
 </div>
+<div class="iframe">
   <Popover bind:this={popover} anchor={iconContainer} align="right">
     <FeedbackIframe on:finished={popover.hide} />
   </Popover>
+</div>
 
 <style>
   i {
@@ -48,4 +50,8 @@
   .container:hover i {
     color: var(--ink);
   }
+
+  .iframe :global(.menu-container) {
+    background-color: white;
+  }
 </style>