The reword to "(layout changed?)" had no linter justification: lll
counts a tab as one character under this config, so main's
83-character line was already inside the 88 limit. Repo rules require
explicit owner approval to modify an existing test, so restore main's
wording verbatim. The message exists to tell a maintainer that the
signed URL layout changed, which is a compatibility-breaking event.
586ce004b6