message: fix(edgeupdater): check if element below is updater
diff: @@ -101,8 +101,9 @@ export function onMouseDown(
  const elementBelow = document.elementFromPoint(event.clientX, event.clientY);
  const elementBelowIsTarget = elementBelow?.classList.contains('target');
  const elementBelowIsSource = elementBelow?.classList.contains('source');
  + const elementBelowIsUpdater = elementBelow?.classList.contains('react-flow__edgeupdater');
  - if (!reactFlowNode || (!elementBelowIsTarget && !elementBelowIsSource)) {
  + if (!reactFlowNode || (!elementBelowIsTarget && !elementBelowIsSource && !elementBelowIsUpdater)) {
  return;
  }
  