the intent of this was noble (to make sure nothing was missed), but in practice throwing
errors on this stuff is just a pain in the ass. We don't actually need to care if the
properties are not used, since it doesn't affect the decoding (like it would for
a missing packet field), so the only reasons to complain are for BedrockProtocol to
have a complete picture of the protocol, and to make sure we're not discarding useful
information.
Log a warning in these cases instead, which should be noticed by developers without
being an unnecessary problem for users.
closes#6816
