The translation parity test fails on main since the Hebrew locale
landed. Three gaps, all from catalogs drifting past each other:
The new he locale was based on an older en catalog and was missing 17
keys (pin/unpin, recipient autocomplete, attachment-upload validation,
the date_locale block, the tint_list_rows and show_folder_total_count
settings, language.sk). They are translated to Hebrew here; date_locale
keeps the same English values every other locale currently has.
The rtl_editing setting existed only in en and he - added translated to
the other 20 locales.
language.he was missing everywhere - added as the endonym "עברית" to
all locales, matching how the other language names are written.