test(rsc): fix flaky streaming test (#1059)

Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>

Author: hi-ogawa

packages/plugin-rsc/e2e/basic.test.ts

@@ -1224,15 +1224,18 @@ function defineTest(f: Fixture) {
     expect(res?.status()).toBe(500)
   })
 
-  test('hydrate while streaming @js', async ({ page }) => {
-    // client is interactive before suspense is resolved
+  test('streaming @js', async ({ page }) => {
+    // suspense streaming works
     await page.goto(f.url('./?test-suspense=1000'), { waitUntil: 'commit' })
-    await waitForHydration(page)
     await expect(page.getByTestId('suspense')).toContainText(
-      'suspense-fallback',
+      'suspense-resolved',
     )
+
+    // also client is interactive (hydrated) before suspense is resolved
+    await page.goto(f.url('./?test-suspense=100000'), { waitUntil: 'commit' })
+    await waitForHydration(page)
     await expect(page.getByTestId('suspense')).toContainText(
-      'suspense-resolved',
+      'suspense-fallback',
     )
   })