Home Assistant resolves a catalog `unit_of_measurement` against the default
language, not the user's (entity_platform re-fetches 'en' for exactly this
key), because a unit is part of the state's identity -- the recorder writes
it into statistics metadata and compares it across restarts. Localizing it
would make switching Home Assistant's language look like a unit change and
suppress the sensor's statistics.
So the six non-English entries were never read, and the English one only
restated what `unit="cycles"` already said. Same displayed unit either way;
this drops seven catalog keys that looked translatable but weren't.
Marc Billow
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