no 'file arrow' if the file name consists entirely of emojis

[wrclark]

Index
=> /demo/hello.gmi  hello.gmi <20 B>
=> /demo/%D0%BC%D1%96%D0%B6%D0%BD%D0%B0%D1%80%D0%BE%D0%B4%D0%BD%D0%B8%D0%B9/  міжнародний/
=> /demo/%F0%9F%A6%8A%F0%9F%90%A6%F0%9F%A6%89%F0%9F%90%9E%F0%9F%A6%93/  🦊🐦🦉🐞🦓/

$ ls -l capsule/demo
total 12
drwxrwxr-x 2 william william 4096 Aug 18 02:04 🦊🐦🦉🐞🦓
-rw-rw-r-- 1 william william   20 Aug 18 02:18 hello.gmi
drwxrwxr-x 2 william william 4096 Aug 18 01:15 міжнародний

testing my gemini server and noticed this

[skyjake]

The logic for picking the custom link icon should be fixed to check if there is more than one consecutive Emoji in the label.