succeeded rendered as casual declarative 성공했다 ('it succeeded') next to
skipped's polite 건너뛰었습니다 and pending's noun-phrase 보류 중, in a summary
that joins all three after a count: '3 성공했다 · 1 건너뛰었습니다'. Machine
translation read succeeded as a finished sentence instead of the noun label
the other two siblings use. Switch to 성공 and pin it in the key-override
file so the catalog regen script can't revert it; #15875 fixed five other
keys in the same family but its hardcoded regression map didn't cover this
one.