fix bypass hotkey in vue nodes and fix node data instrumentation setup issue when switching to Vue nodes after initial load (#5715)

## Summary

Fixed Vue node keybinding target element ID to enable
bypass/pin/collapse hotkeys in both LiteGraph and Vue rendering modes.

Also fixed a bug when starting in litegraph mode => switching to Vue
nodes without reloading => `graph.onTrigger` is set to `undefined` which
interferes with proper setup of node data instrumentation, among other
things.

## Changes

- **What**: Updated keybinding `targetElementId` from `graph-canvas` to
`graph-canvas-container` for node manipulation commands (parent of both
the canvas and transform pane -- vue nodes container).
- **What**: Added conditional `onTrigger` handler restoration in slot
layout sync to prevent Vue node manager conflicts

## Review Focus

Event handler precedence between Vue nodes and LiteGraph systems during
mode switching, ensuring hotkeys work consistently across rendering
modes.

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-5715-fix-bypass-hotkey-in-vue-nodes-and-fix-node-data-instrumentation-setup-issue-when-switchi-2756d73d3650815c8ec8d5e4d06232e3)
by [Unito](https://www.unito.io)

src/scripts/app.ts

@@ -596,7 +596,10 @@ export class ComfyApp {
         const keybindingStore = useKeybindingStore()
         const keybinding = keybindingStore.getKeybinding(keyCombo)
 
-        if (keybinding && keybinding.targetElementId === 'graph-canvas') {
+        if (
+          keybinding &&
+          keybinding.targetElementId === 'graph-canvas-container'
+        ) {
           useCommandStore().execute(keybinding.commandId)
 
           this.graph.change()