Fix crash relating to "Already sent chunk"

Forgot to update the distandce field in the single user area map
on update, and additionally used the wrong radius (introduced
last commit) for the broadcast map

patches/server/Rewrite-chunk-system.patch

@@ -3205,7 +3205,7 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
 +            this.player.connection.send(this.updateClientSimulationDistance(tickViewDistance));
 +
 +            // add to distance maps
-+            this.broadcastMap.add(chunkX, chunkZ, sendViewDistance);
++            this.broadcastMap.add(chunkX, chunkZ, sendViewDistance + 1);
 +            this.loadTicketCleanup.add(chunkX, chunkZ, loadViewDistance + 1);
 +            this.tickMap.add(chunkX, chunkZ, tickViewDistance);
 +
@@ -3270,7 +3270,7 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
 +            }
 +
 +            // update distance maps
-+            this.broadcastMap.update(currentChunkX, currentChunkZ, sendViewDistance);
++            this.broadcastMap.update(currentChunkX, currentChunkZ, sendViewDistance + 1);
 +            this.loadTicketCleanup.update(currentChunkX, currentChunkZ, loadViewDistance + 1);
 +            this.tickMap.update(currentChunkX, currentChunkZ, tickViewDistance);
 +            if (sendViewDistance > loadViewDistance || tickViewDistance > loadViewDistance) {
@@ -3521,6 +3521,7 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
 +
 +            this.lastChunkX = toX;
 +            this.lastChunkZ = toZ;
++            this.distance = newViewDistance;
 +
 +            final T parameter = this.parameter;
 +