Fixed an issue where characters were separated in the NFD system

String origin = "잊지마 넌 흐린 어둠사이 왼손으로 그린 별 하나";

String.stripAccents(origin) is expected to return origin,

but it returns this.

"ㅇㅣㅈㅈㅣㅁㅏ ㄴㅓㄴ ㅎㅡㄹㅣㄴ ㅇㅓㄷㅜㅁ ㅅㅏㅇㅣ ㅇㅗㅣㄴㅅㅗㄴㅇㅡㄹㅗ ㄱㅡㄹㅣㄴ ㅂㅕㄹ ㅎㅏ ㄴㅏ"

The above string is a separate consonant and vowel of korean.

This issue happens on NFD systems. (linux, windows)