Fix server switching with larger render distances

[Camotoy]

The server only started sending its render distance during 1.14. ViaVersion compensates by sending 64 as the render distance, always - but this can choke up Bedrock in various ways. This PR fixes two separate issues related:

• In some instances, the client would be stuck on Building Terrain during server switch. This is solved by fake-decreasing the render distance during server transfer. Zero issues have been found thus far.
• When switching servers, chunks could be dropped. While not pretty, if the client is not spawned, they are teleported to near the chunks so they cannot be unloaded.