fix: unobserve before re-observe to trigger fresh RO callback on settle

observe() on an already-observed element is a no-op per spec.
Unobserve first to ensure the flush produces a fresh measurement.

src/renderer/extensions/vueNodes/composables/useVueNodeResizeTracking.ts

@@ -106,6 +106,7 @@ watch(canvasTransformActive, (active) => {
   for (const element of transformDeferredElements) {
     if (element.isConnected) {
       markElementForFreshMeasurement(element)
+      resizeObserver.unobserve(element)
       resizeObserver.observe(element)
     }
   }