[Forge] Don't send resets to Clients which are known to not support it

Don't send the reset packet to Forge clients which are known to not support it. This does prevent the crash of Forge Clients which have a build number under 1209. This also prevents Forge Clients under that Buildnumber from joining any other Server (which is a Forge Server) when they don't support resetting the Handshake.
We still need to check the handshake is complete.

Have you tried this with a current build (>1209) with a vanilla lobby? We don't know if we have a Forge client at this point, but we still need to perform a reset to reset the mod list.