Add group nodes to search and node library (#861)

* Register group nodes in nodeDefStore

* Add playwright tests

* Update test expectations [skip ci]

* Mock nodeDefStore in group node unit test

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Co-authored-by: github-actions <github-actions@github.com>

browser_tests/groupNode.spec.ts

@@ -0,0 +1,22 @@
+import { expect } from '@playwright/test'
+import { comfyPageFixture as test } from './ComfyPage'
+
+test.describe('Group Node', () => {
+  test('Can be added with search', async ({ comfyPage }) => {
+    const groupNodeName = 'DefautWorkflowGroupNode'
+    await comfyPage.convertAllNodesToGroupNode(groupNodeName)
+    await comfyPage.doubleClickCanvas()
+    await comfyPage.searchBox.fillAndSelectFirstNode(groupNodeName)
+    await expect(comfyPage.canvas).toHaveScreenshot(
+      'group-node-copy-added-from-search.png'
+    )
+  })
+
+  test('Displays tooltip on title hover', async ({ comfyPage }) => {
+    await comfyPage.convertAllNodesToGroupNode('Group Node')
+    await comfyPage.page.mouse.move(47, 173)
+    const tooltipTimeout = 500
+    await comfyPage.page.waitForTimeout(tooltipTimeout + 16)
+    await expect(comfyPage.page.locator('.node-tooltip')).toBeVisible()
+  })
+})