[fix] do not drag on right-click + fix refs (#5784)

## Summary

Fixes drag handling logic.

## Changes

Only check for drag on left-click.

Adds handler logic for following pointer events:
1. drag termination
2. context menu
3. pointer cancel

Adds tests.

Consolidates cleanup tasks.

## Screenshots

Fixed State:

Ignore first failed drag, browser window didn't have context.


https://github.com/user-attachments/assets/00ec685a-1ef7-4102-b19b-4cdb9b201d22

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-5784-fix-do-not-drag-on-right-click-fix-refs-27a6d73d3650812ea797fccf14022568)
by [Unito](https://www.unito.io)

src/renderer/extensions/vueNodes/components/LGraphNode.vue

@@ -38,9 +38,7 @@
       },
       dragStyle
     ]"
-    @pointerdown="handlePointerDown"
-    @pointermove="handlePointerMove"
-    @pointerup="handlePointerUp"
+    v-bind="pointerHandlers"
     @wheel="handleWheel"
   >
     <div class="flex items-center">
@@ -232,13 +230,10 @@ onErrorCaptured((error) => {
 
 // Use layout system for node position and dragging
 const { position, size, zIndex, resize } = useNodeLayout(() => nodeData.id)
-const {
-  handlePointerDown,
-  handlePointerUp,
-  handlePointerMove,
-  isDragging,
-  dragStyle
-} = useNodePointerInteractions(() => nodeData, handleNodeSelect)
+const { pointerHandlers, isDragging, dragStyle } = useNodePointerInteractions(
+  () => nodeData,
+  handleNodeSelect
+)
 
 onMounted(() => {
   if (size.value && transformState?.camera) {