[Bug] External link icons are not displayed

[Rikiub]

Describe the bug Default theme display icons on external links but AnuPpuccin doesn't. It's good have icons for accessibility because help to difference between internal and external links.

To Reproduce Steps to reproduce the behavior:

1. Switch to Anuppuccin Theme
2. Write an external link.

Expected behavior Link with external icon like the default theme.

Screenshots

Default theme

AnuPpuccin theme