fix: Ensure portal ref exists and is in DOM before use in DragHandle arrow overlay (#3505)

Co-authored-by: Johannes Weber <jowejowe@amazon.com>

Author: johannes-weber

src/internal/components/drag-handle-wrapper/portal-overlay.tsx

@@ -33,7 +33,8 @@ export default function PortalOverlay({
     let lastInlineSize: number | undefined;
     let lastBlockSize: number | undefined;
     const updateElement = () => {
-      if (ref.current) {
+      // It could be that the portal hasn't been attached to the DOM yet - ensure the ref exists and is attached DOM tree.
+      if (ref.current && document.body.contains(ref.current)) {
         const isRtl = getIsRtl(ref.current);
         const { insetInlineStart, insetBlockStart, inlineSize, blockSize } = getLogicalBoundingClientRect(track);
         // For simplicity, we just make all our calculations independent of