Add postinstall

Author: maxkorp

typescript-sdk/apps/dojo/e2e/package.json

@@ -4,6 +4,7 @@
   "private": true,
   "description": "Scheduled Playwright smoke tests for CopilotKit demo apps",
   "scripts": {
+    "postinstall": "playwright install --with-deps",
     "test": "playwright test",
     "test:ui": "playwright test --ui"
   },