Released AIR versions, such as 262.air/release-09, read the custom
answer companion only from the root key
_meta._askUserQuestionCustomAnswer. The adapter sent only
_meta.jetbrains.air.customAnswer, so these versions showed the companion
as a separate question.
For an AIR client the companion now carries both keys with the same
value. Other clients get no key, as before. Remove the root key when the
ACP registry no longer serves AIR versions that read only that key.
IJAI-2892
af0b43de94