Describe the bug
When toggling "Present" mode, the outputs are still editable (cut, copy, and paste functions still work).
To Reproduce
Steps to reproduce the behavior:
Expected behavior
When in Present mode, none of the outputs should be moveable, removable, or resizable. The only thing that the user should be able to do is interact with the output.
Screenshots/gifs

Context
- OS: [e.g. macOS 10.15.5]
- Browser [e.g. Safari 13.1.1]
- JupyterLab Version [e.g. 2.1.4]