Only call EntityPortalExitEvent if entity is actually in a portal

patches/server/Add-back-EntityPortalExitEvent.patch

@@ -23,6 +23,7 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
                  to = teleEvent.getTo();
 -                teleportTarget = new DimensionTransition(((CraftWorld) to.getWorld()).getHandle(), CraftLocation.toVec3D(to), teleportTarget.speed(), to.getYaw(), to.getPitch(), teleportTarget.missingRespawnBlock(), teleportTarget.postDimensionTransition(), teleportTarget.cause());
 +                // Paper start - Call EntityPortalExitEvent
++                if (this.portalProcess != null) { // if in a portal
 +                    CraftEntity bukkitEntity = this.getBukkitEntity();
 +                    Vec3 velocity = teleportTarget.speed();
 +                    org.bukkit.event.entity.EntityPortalExitEvent event = new org.bukkit.event.entity.EntityPortalExitEvent(
@@ -31,15 +32,16 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
 +                        bukkitEntity.getVelocity(), org.bukkit.craftbukkit.util.CraftVector.toBukkit(velocity)
 +                    );
 +                    event.callEvent();
-+                if (this.isRemoved()) {
-+                    return null;
-+                }
 +
 +                    if (!event.isCancelled() && event.getTo() != null) {
 +                        to = event.getTo().clone();
 +                        velocity = org.bukkit.craftbukkit.util.CraftVector.toNMS(event.getAfter());
 +                    }
 +                    teleportTarget = new DimensionTransition(((CraftWorld) to.getWorld()).getHandle(), CraftLocation.toVec3D(to), velocity, to.getYaw(), to.getPitch(), teleportTarget.missingRespawnBlock(), teleportTarget.postDimensionTransition(), teleportTarget.cause());
++                }
++                if (this.isRemoved()) {
++                    return null;
++                }
 +                // Paper end - Call EntityPortalExitEvent
                  // CraftBukkit end
                  ServerLevel worldserver1 = teleportTarget.newLevel();