Incompatibility with `blomstra-fontawesome`

The extension does not properly render the "reply" (and "like") icon when Font Awesome extension is enabled, as it uses the "Font Awesome 5" font:


This can be fixed by applying a manual CSS fix:

```
.Post-actions .Button--link::before {
font-family: 'Font Awesome 6 Free' !important;
}
```

However, I wonder why the extension is not using the `` method of inserting icons? Seems like it's a generic approach that would work for any kit, since it's the loaded Font Awesome CSS that describes the `fas fa` classes and ensures compatibility between FA 5 and 6 and also Free vs Pro versions