Caskaydia Cove has broken infinite ligatures
#### 🗹 Requirements

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#### 🎯 Subject of the issue

Experienced behavior:

ligatures that extend infinitely as you keep adding more characters, such as - and =, are too short on kitty, I originally files a bug report with kitty since it renders correctly on Windows Terminal and Termux, but they said it was an issue with the font and I should file a report here
My original kitty bug report: https://github.com/kovidgoyal/kitty/issues/6220
My kitty config: https://oldworldorder.gay/kitty.conf

Expected behavior:

The ligatures should be the correct length
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Example symbols:
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`--------------------------------------a`
`======================================a`

pasting these in kitty with the right font will show a gap between the end of the `-` or `=` and the `a`
#### 🔧 Your Setup

- _Which font are you using (e.g. `Anonymice Powerline Nerd Font Complete.ttf`)?_
   - I put everything from the `CascadiaCode.zip` file in `/Library/Fonts` and set my font name in the kitty config to `CaskaydiaCove Nerd Font Mono`, so there's not really one filename, it's everything in the `CascadiaCode.zip` file
- _Where did you get the file from (download link, self patched, source downloaded from link...)_
   - Downloaded from https://www.nerdfonts.com/font-downloads, which appears to link directly to the github releases
- _Which terminal emulator are you using (e.g. `iterm2`, `urxvt`, `gnome`, `konsole`)?_
   - kitty
- _Are you using OS X, Linux or Windows? And which specific version or distribution?_
   - Mac OS 11 Big Sur

#### ★ Screenshots (Optional)

<img width="602" alt="Screen Shot 2023-04-30 at 6 08 58 PM" src="https://user-images.githubusercontent.com/57970114/235378368-7b0d5a3d-0995-49ec-b9ec-97355050b91c.png">


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