Use the unknownEntries variable we so cleverly added in
QProtobufMessagePrivate to store the data for the unknown fields.
By using a bytes-to-count mapping we can easily store multiple repeated
entries of a message, which could happen in a repeated list with
multiple identical entries. Since we don't know if a field is actually
marked as _repeated_ or not (since it's an unknown field) we just have
to assume it is.
Fixes: QTBUG-101966
Change-Id: I1ebde5fdaebe2987a68de1632f136bb6606e718a
Reviewed-by: Alexey Edelev <alexey.edelev@qt.io>
Mårten Nordheim