BUG: Undo (Ctrl+Z) is not cancelling browser keyboard shortcut

GrapesJS version

• I confirm to use the latest version of GrapesJS

What browser are you using?

Vivaldi

Reproducible demo link

https://grapesjs.com/demo.html

Describe the bug

How to reproduce the bug?

1. Press Ctrl+Z after doing an action, to undo it
2. The action is reversed, but my browser also reopens the last closed tab

What is the expected behavior?

Stopping the browser from performing the default keybinding.

What is the current behavior?

Ctrl+Z event propagation is not stopped in JS, so the browser still performs the assigned keyboard shortcut.

Code of Conduct

• I agree to follow this project's Code of Conduct