/usr/share/myspell/dicts/hyph_pl_PL.dic is in hyphen-pl 1:3.0a-4.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/myspell/dicts/../../hyphen/hyph_pl_PL.dic
/usr/share/myspell/dicts/../../hyphen/hyph_pl_PL.dic