From review: the treatment choice "Color" reused the shared "Color" key,
which zh-hans and ru translate as the colour noun (颜色, Цвет) for the
Color panel, giving "Treatment is colour". The colour-label choice
"None" was masculine in Spanish (Ninguno) next to the feminine
"etiqueta". They are now "In Color" and "No Label", translated in all
seven locales (彩色, Цветное, Sin etiqueta…).
Also moves display_label_gaps_are_reported's doc comment back onto it;
the new choice test had been inserted between them.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>