Incorrect selection after undo

[ivan-kzn]

Describe the bug
If you select some text and delete it, then you are undoing previous action - another users connected via yjs will see incorrect selection

To Reproduce
Steps to reproduce the behavior:

1. Two collaborative users
2. First user selects some text
   
3. Second user sees the selected text
   
4. First user deletes text and then presses Ctrl+Z
5. First user sees correct text selection
   
6. Second user sees incorrect selection
   

Expected behavior
Second user should see exactly same text selection

Environment Information

• Browser / Node.js (Chrome, Angular)
• Yjs 13.5.50, y-monaco 0.1.4, y-websocket 1.5.0

Additional context
Add any other context about the problem here.