Block 'Explore' feature on Google Docs for users under Google Family Link

I tried to put my boy under my supervision on Google Family Link. I put a limited number of apps on his phone, only what he needs without a browser at all. One of the apps it has is Google Docs. Google Docs on smartphones has an option called 'Explore', where you can search the Internet, and it simply links you to Google and acts as a real browser. To try: open a sample document > enter edit mode (when the cursor is flashing) > click on the drawing of the three dots > Explore The whole idea was to block the browser so that it would be impossible to surf the Internet, but Google forgot a small hole in their security. I haven't even found a way to contact Google themselves, but I think that even if I contact them, no one will really care about me. Does anyone have an idea how to block it? Update: Google remove the exploer option