Issue :  Nova act module import error

Issue :  Nova act module import error 

Where: `labs/module4/notebooks/5_agentcore_tool_browser.ipynb   | cell#7`


<img width="1304" height="730" alt="Image" src="https://github.com/user-attachments/assets/c1450eee-a854-4c4f-9ec6-4557da34bed2" />