Allow teleporting through end gateways as a passenger/vehicle

Vanilla allows this now for same world teleports

Fixes #3735

Spigot-Server-Patches/0494-Ensure-safe-gateway-teleport.patch

@@ -5,7 +5,7 @@ Subject: [PATCH] Ensure safe gateway teleport
 
 
 diff --git a/src/main/java/net/minecraft/server/TileEntityEndGateway.java b/src/main/java/net/minecraft/server/TileEntityEndGateway.java
-index ea61a473d8e47428ed5cd4541a5855f0e2c50815..aebb6b6b2b869231310567b030fe32f34cc268f5 100644
+index ea61a473d8e47428ed5cd4541a5855f0e2c50815..ce239d2b2fe942915aa093b86343c3740d10e273 100644
 --- a/src/main/java/net/minecraft/server/TileEntityEndGateway.java
 +++ b/src/main/java/net/minecraft/server/TileEntityEndGateway.java
 @@ -62,10 +62,14 @@ public class TileEntityEndGateway extends TileEntityEnderPortal implements ITick
@@ -17,7 +17,7 @@ index ea61a473d8e47428ed5cd4541a5855f0e2c50815..aebb6b6b2b869231310567b030fe32f3
 -                this.a((Entity) list.get(this.world.random.nextInt(list.size())));
 +            // Paper start
 +            for (Entity entity : list) {
-+                if (!entity.isPassenger() && !entity.isVehicle() && entity.canPortal()) {
++                if (entity.canPortal()) {
 +                    this.a(entity);
 +                    break;
 +                }