JetBrains Mono Nerd Font Ligatures (`{{`) broken in 2.3.x
#### 🗹 Requirements

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#### 🎯 Subject of the issue

Before v2.3.x, `{{` were untouched.
Now, with ligatures enabled, they are turned into some weird icons (see screenshot below).
It can be reproduced by toggling ligatures on/off.

NB: I don't know if 2.3.2 or 2.3.0 introduced the issue.

#### 🔧 Your Setup

- _Which font are you using (e.g. `Anonymice Powerline Nerd Font Complete.ttf`)?_
   `JetBrainsMono Nerd Font Mono` (v2.3.2)
- _Where did you get the file from (download link, self patched, source downloaded from link...)_
   - homebrew cask
- _Which terminal emulator are you using (e.g. `iterm2`, `urxvt`, `gnome`, `konsole`)?_
   - VSCode
- _Are you using OS X, Linux or Windows? And which specific version or distribution?_
   - macOS

#### ★ Screenshots (Optional)

![image](https://user-images.githubusercontent.com/8430564/214344768-c99e8d09-6f54-4c99-8970-ec5ba4686afc.png)
