`max_chars` issue with CJK (Chinese/Japanese/Korean) characters.

[Efterklang]

Thanks for the great work. <3

In my config, I use max_char to prevent label text from taking up too much space or overflow popup's boundary

However, CJK characters are typically double-width, so labels containing them occupy more space than Latin characters, which leads to inconsistent layout.

I’m wondering if it would be possible to support counting CJK characters as double-width when applying max_char.