Made validate fail if empty object is passed

Signed-off-by: Andreas Heiberg <git@andreas-heiberg.com>
@ziggys added ziggys commit

If no rules are passed when saving it should fallback to the static rules property before it tries to pluck the input fields when autoHydrateEntityFromInput is turned on.

Signed-off-by: Andreas Heiberg <git@andreas-heiberg.com>