fix: invalidate cached measurement on collapse and clarify padding source

browser_tests/fixtures/helpers/boundsUtils.ts

@@ -12,7 +12,7 @@ export interface MeasureResult {
   nodeVisualBounds: Record<string, CanvasRect>
 }
 
-// Must match the padding value passed to createBounds() in selectionBorder.ts
+// Must match createBounds(selectedItems, 10) in src/extensions/core/selectionBorder.ts:19
 const SELECTION_PADDING = 10
 
 export async function measureSelectionBounds(

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

@@ -151,6 +151,7 @@ const resizeObserver = new ResizeObserver((entries) => {
     // but store collapsed dimensions in vueBoundsOverrides for onBounding.
     if (elementType === 'node' && element.dataset.collapsed != null) {
       if (nodeId) {
+        markElementForFreshMeasurement(element)
         const body = element.querySelector(
           '[data-testid^="node-inner-wrapper"]'
         )