add back Optimize collision to not load chunks

patches/server/0438-Prevent-position-desync-in-playerconnection-causing-.patch

@@ -1,31 +0,0 @@
-From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
-From: Spottedleaf <Spottedleaf@users.noreply.github.com>
-Date: Fri, 12 Jun 2020 16:51:39 -0700
-Subject: [PATCH] Prevent position desync in playerconnection causing tp
- exploit
-
-Caused the server to revert to the player's overworld coordinates
-after teleporting into the end.
-
-Sidenote: The underlying issue is that the move call can teleport
-entities and do other things like kill the entity. In the future,
-to fix all exploits derieved from this usually unexpected
-behaviour, we need to move all of this dangerous logic outside
-of the move call and into an appropriate place in the tick method.
-
-diff --git a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
-index bb1244d895c6e5fd668b5a01f507624fdac847f0..fec9551ef74c17be417a326847cc20b0ad54076b 100644
---- a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
-+++ b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
-@@ -1324,6 +1324,11 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Ser
- 
-                             this.player.move(MoverType.PLAYER, new Vec3(d7, d8, d9));
-                             this.player.setOnGround(packet.isOnGround()); // CraftBukkit - SPIGOT-5810, SPIGOT-5835: reset by this.player.move
-+                            // Paper start - prevent position desync
-+                            if (this.awaitingPositionFromClient != null) {
-+                                return; // ... thanks Mojang for letting move calls teleport across dimensions.
-+                            }
-+                            // Paper end - prevent position desync
-                             double d12 = d8;
- 
-                             d7 = d0 - this.player.getX();