Fix refresh combos command fails on nodes using V2 spec (#3848)

browser_tests/assets/node_with_v2_combo_input.json

@@ -0,0 +1,36 @@
+{
+  "id": "5635564e-189f-49e4-9b25-6b7634bcd595",
+  "revision": 0,
+  "last_node_id": 78,
+  "last_link_id": 53,
+  "nodes": [
+    {
+      "id": 78,
+      "type": "DevToolsNodeWithV2ComboInput",
+      "pos": [1320, 904],
+      "size": [270.3199157714844, 58],
+      "flags": {},
+      "order": 0,
+      "mode": 0,
+      "inputs": [],
+      "outputs": [
+        {
+          "name": "COMBO",
+          "type": "COMBO",
+          "links": null
+        }
+      ],
+      "properties": {
+        "Node name for S&R": "DevToolsNodeWithV2ComboInput"
+      },
+      "widgets_values": ["A"]
+    }
+  ],
+  "links": [],
+  "groups": [],
+  "config": {},
+  "extra": {
+    "frontendVersion": "1.19.7"
+  },
+  "version": 0.4
+}

browser_tests/tests/widget.spec.ts

@@ -53,6 +53,26 @@ test.describe('Combo text widget', () => {
     const refreshedComboValues = await getComboValues()
     expect(refreshedComboValues).not.toEqual(initialComboValues)
   })
+
+  test('Should refresh combo values of nodes with v2 combo input spec', async ({
+    comfyPage
+  }) => {
+    await comfyPage.loadWorkflow('node_with_v2_combo_input')
+    // click canvas to focus
+    await comfyPage.page.mouse.click(400, 300)
+    // press R to trigger refresh
+    await comfyPage.page.keyboard.press('r')
+    // wait for nodes' widgets to be updated
+    await comfyPage.page.mouse.click(400, 300)
+    await comfyPage.nextFrame()
+    // get the combo widget's values
+    const comboValues = await comfyPage.page.evaluate(() => {
+      return window['app'].graph.nodes
+        .find((node) => node.title === 'Node With V2 Combo Input')
+        .widgets.find((widget) => widget.name === 'combo_input').options.values
+    })
+    expect(comboValues).toEqual(['A', 'B'])
+  })
 })
 
 test.describe('Boolean widget', () => {