Embedded with profile-config {"locale":"ar"} this leaf drew no Arabic at all,
while the same page reached with ?lang=ar drew 273 characters of it.
Its two siblings were fixed two different ways and neither applies here. This
bundle's entry calls defineCustomElement with no configureApp: there is no i18n
instance for install-time provide to reach, and no ProfileLoader beneath it to
drive one. Everything this element renders comes through tStatic — the grid's
`t` proxy, the header's labels — and tStatic resolves the locale from the URL
and the document, neither of which a host's profile-config touches.
So the only thing missing was somebody to say which language this page is being
read in, which is the same six lines the other two composites already carry.
MEASURED with check:host-locale-contract:
big-picture/big-picture host 0 of 273 -> host 273 of 273
whole fleet 1 failing -> PASS, 32 leaves
8b40f6c585