refactor(nodes): trigger dragging on drag start

packages/core/src/composables/useDrag.ts

@@ -73,6 +73,8 @@ function useDrag(params: UseDragParams) {
         } else {
           dragHandler = drag()
             .on('start', (event: UseDragEvent) => {
+              dragging.value = true
+
               if (!selectNodesOnDrag && !multiSelectionActive && id) {
                 if (!node?.selected) {
                   removeSelectedElements()
@@ -115,7 +117,6 @@ function useDrag(params: UseDragParams) {
                 )
 
                 updateNodePositions(dragItems, true, true)
-                dragging.value = true
 
                 if (onDrag) {
                   const [currentNode, nodes] = getEventHandlerParams({
@@ -129,6 +130,7 @@ function useDrag(params: UseDragParams) {
 
               event.on('end', (event) => {
                 dragging.value = false
+
                 if (onStop && dragItems) {
                   updateNodePositions(dragItems, false, false)