Five bound English strings no locale could reach, now catalogue keys in all eleven locales:
the column sort tooltip (dashboard.sort_by_column_hint, {column}), the full-screen button's
title and label (fs_*), the export tooltip (export_*_hint, a label form with {n} so no plural
rule is needed), and the donut's accessible name (aria.donutChart, {title}), which read a
translated title followed by the English word "donut". English stays the fallback argument.
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