Sleep for windows playwright test.

tests/playwright/playwright.py

@@ -20,6 +20,7 @@
 """
 
 import os
+import time
 from playwright.sync_api import Playwright, sync_playwright, expect
 
 
@@ -172,6 +173,7 @@ def _print(s):
         "http://localhost:5000/dev_api/fake_story.html"
     )
     page.get_by_role("button", name="Import").click()
+    time.sleep(2)
     # Page is imported, form shown, so save it.
     page.get_by_role("button", name="Save").click()
     page.get_by_text("Tengo").click()  # Quick hacky check if exists.