Fontcase MesloLGS NF no longer works

### Checklist

- [x] Using latest version on the [App Store](http://itunes.apple.com/app/id1156707581)
- [x] Read the [docs](http://blink.sh/docs/)
- [x] Searched for [existing GitHub issues](https://github.com/blinksh/blink/issues)

### Configuration

Blink V14.0.6.426
iPadOS 15.2.1

### Describe the bug

Up until 14.0.2 MesloLGS NF installed via Fontcase was listed as a font and could be used in Blink.
Recently it is no longer displayed in Blink, whilst still available in ShellFish, so I assume nothing has changed with the font or iPadOS in this regard.
I can access it by importing it into Blink, so not a blocker, but why has the auto-detect of this font stopped working?

A font that Blink could detect should not suddenly disapear.

No source files, tests, or entry points are named. Reproduce the issue with Blink V14.0.6.426 on iPadOS 15.2.1 using MesloLGS NF installed through Fontcase, then compare automatic detection with importing the font directly. Done means the installed font is listed and usable in Blink again.

Written by the indexing model from the issue text.