[Bug] Fix input link slots (#3349)

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

browser_tests/tests/graph.spec.ts

@@ -0,0 +1,16 @@
+import { expect } from '@playwright/test'
+
+import { comfyPageFixture as test } from '../fixtures/ComfyPage'
+
+test.describe('Graph', () => {
+  // Should be able to fix link input slot index after swap the input order
+  // Ref: https://github.com/Comfy-Org/ComfyUI_frontend/issues/3348
+  test('Fix link input slots', async ({ comfyPage }) => {
+    await comfyPage.loadWorkflow('input_order_swap')
+    expect(
+      await comfyPage.page.evaluate(() => {
+        return window['app'].graph.links.get(1)?.target_slot
+      })
+    ).toBe(1)
+  })
+})