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)

browser_tests/tests/vueNodes/nodeStates/bypass.spec.ts

@@ -0,0 +1,49 @@
+import {
+  comfyExpect as expect,
+  comfyPageFixture as test
+} from '../../../fixtures/ComfyPage'
+
+const BYPASS_HOTKEY = 'Control+b'
+const BYPASS_CLASS = /before:bg-bypass\/60/
+
+test.describe('Vue Node Bypass', () => {
+  test.beforeEach(async ({ comfyPage }) => {
+    await comfyPage.setSetting('Comfy.VueNodes.Enabled', true)
+    await comfyPage.vueNodes.waitForNodes()
+  })
+
+  test('should allow toggling bypass on a selected node with hotkey', async ({
+    comfyPage
+  }) => {
+    const checkpointNode = comfyPage.page.locator('[data-node-id]').filter({
+      hasText: 'Load Checkpoint'
+    })
+    await checkpointNode.getByText('Load Checkpoint').click()
+    await comfyPage.page.keyboard.press(BYPASS_HOTKEY)
+    await expect(checkpointNode).toHaveClass(BYPASS_CLASS)
+
+    await comfyPage.page.keyboard.press(BYPASS_HOTKEY)
+    await expect(checkpointNode).not.toHaveClass(BYPASS_CLASS)
+  })
+
+  test('should allow toggling bypass on multiple selected nodes with hotkey', async ({
+    comfyPage
+  }) => {
+    const checkpointNode = comfyPage.page.locator('[data-node-id]').filter({
+      hasText: 'Load Checkpoint'
+    })
+    const ksamplerNode = comfyPage.page.locator('[data-node-id]').filter({
+      hasText: 'KSampler'
+    })
+
+    await checkpointNode.getByText('Load Checkpoint').click()
+    await ksamplerNode.getByText('KSampler').click({ modifiers: ['Control'] })
+    await comfyPage.page.keyboard.press(BYPASS_HOTKEY)
+    await expect(checkpointNode).toHaveClass(BYPASS_CLASS)
+    await expect(ksamplerNode).toHaveClass(BYPASS_CLASS)
+
+    await comfyPage.page.keyboard.press(BYPASS_HOTKEY)
+    await expect(checkpointNode).not.toHaveClass(BYPASS_CLASS)
+    await expect(ksamplerNode).not.toHaveClass(BYPASS_CLASS)
+  })
+})