Fix slot desync

General patch fixing slot desyncs between the server and client that
result from cancelled events/paper introduced logic.

Co-authored-by: Minecrell <minecrell@minecrell.net>
Co-authored-by: Newwind <support@newwindserver.com>

paper-server/patches/sources/net/minecraft/world/item/EndCrystalItem.java.patch

@@ -1,11 +1,12 @@
 --- a/net/minecraft/world/item/EndCrystalItem.java
 +++ b/net/minecraft/world/item/EndCrystalItem.java
-@@ -47,6 +47,11 @@
+@@ -47,6 +47,12 @@
                          EndCrystal entityendercrystal = new EndCrystal(world, d0 + 0.5D, d1, d2 + 0.5D);
  
                          entityendercrystal.setShowBottom(false);
 +                        // CraftBukkit start
 +                        if (org.bukkit.craftbukkit.event.CraftEventFactory.callEntityPlaceEvent(context, entityendercrystal).isCancelled()) {
++                            if (context.getPlayer() != null) context.getPlayer().containerMenu.sendAllDataToRemote(); // Paper - Fix inventory desync
 +                            return InteractionResult.FAIL;
 +                        }
 +                        // CraftBukkit end