[puter] ci: add npm playwright back to workspace devdependencies

Author: velzie

package.json

@@ -53,6 +53,7 @@
 		"dotenv": "^17.0.0",
 		"eslint": "^9.30.0",
 		"fastify": "^5.4.0",
+		"playwright": "^1.54.2",
 		"prettier": "^3.6.2",
 		"ts-checker-rspack-plugin": "^1.1.4",
 		"tslib": "^2.8.1",