Propertize with font-lock-face with face

FIXES https://github.com/alphapapa/magit-todos/issues/201 I have color again: <img width="848" height="586" alt="Screenshot_20250921_115453" src="https://github.com/user-attachments/assets/1c013f9c-69bd-4aab-a178-8067b14c9f5b" />