Single dollar sign ($) breaks Codemirror highlighting

[wjbuys]

Environment

Joplin version: 1.0.233, using CodeMirror editor.
Platform: Windows 10
OS specifics: 64 bit

Steps to reproduce

1. Make a new note with Codemirror as the editor. I don't even have math expressions enabled in the preferences.
2. Type the following:

   # Test
   The thing costs $10. That's pretty cheap.
   
   # Broken
   Now all of my *highlighting* is _broken_. :'(

3. Observe the sadness:
   

Describe what you expected to happen

I expected CodeMirror to ignore the $, and keep highlighting the rest of my note.

Logfile

I didn't find anything relevant in the logs.

[CalebJohn]

Thanks for the bug report @wjbuys ! This was already fixed in #3582 and will be available in the next release.