Code folding is always reset after closing and reopening file or project

[peterflynn]

1. Launch Brackets with clean preferences
2. Use code folding to collapse some sections in the Getting Started index.html
3. Close the index.html
4. Reopen it

Result: all collapsed sections are expanded again

Expected: this is supposed to be remembered by default

Broken by PR #10850.

[abose]

Closing as this isse has been fixed by PR #10885