Do you mean vscode.dev itself hijacking right-clicks to display its context menu[0]? If so, there's this great extension I use to enable it on the myriad of websites that use it for non-alt-context-menu usage[1].

0: https://i.judge.sh/thirsty/Flutter/chrome_w3SVLELGag.png

1: https://chrome.google.com/webstore/detail/enable-right-click...

I didn't play around with it much. It might have the issues you're facing.