cherry-pick(#29026): test: add a props.children test

tests/playwright-test/playwright.ct-react.spec.ts

@@ -495,3 +495,23 @@ test('should normalize children', async ({ runInlineTest }) => {
   expect(result.exitCode).toBe(0);
   expect(result.passed).toBe(2);
 });
+
+test('should allow props children', async ({ runInlineTest }) => {
+  const result = await runInlineTest({
+    'playwright.config.ts': playwrightConfig,
+    'playwright/index.html': `<script type="module" src="./index.ts"></script>`,
+    'playwright/index.ts': ``,
+    'src/component.spec.tsx': `
+      import { test, expect } from '@playwright/experimental-ct-react';
+
+      test("renders children from props object", async ({ mount, page }) => {
+        const props = { children: 'test' };
+        await mount(<button {...props} />);
+        await expect(page.getByText('test')).toBeVisible();
+      });
+    `,
+  }, { workers: 1 });
+
+  expect(result.exitCode).toBe(0);
+  expect(result.passed).toBe(1);
+});