Extremely easy way to freeze makecode

[Brohann3214]

Describe the bug
I found this bug on accident while commenting out a background image in javascript. It happened to me on accident. It happens when you comment out the top and bottom lines of a setBackgroundImage function when it is collapsed. It causes the site to no longer accept any input, things cannot be clicked or typed
To Reproduce
Steps to reproduce the behavior:

1. open a new project
2. go to javascript
3. drag in a setBackgroundImage function
4. open up the background image in the editor
5. click done
6. comment out the top line of the 2
7. there should now be 6000 errors
8. start to comment out the bottom line and the entire site will no longer accept any user input until the page is reloaded.

Expected behavior
I expect it to comment out the entire collapsed part when I comment out the top line
Screenshots

Desktop (please complete the following information):

• OS: windows
• Browser chrome, web app

Additional context
there's a second bug that you can see in the 3rd picture, also described here: https://forum.makecode.com/t/is-it-normal/30282/2