Call EntityPushedByEntityAttackEvent for Mace AoE (#12257)

Author: Doc94

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

@@ -15,3 +15,12 @@
              ServerLevel serverLevel = (ServerLevel)attacker.level();
              attacker.setDeltaMovement(attacker.getDeltaMovement().with(Direction.Axis.Y, 0.01F));
              if (attacker instanceof ServerPlayer serverPlayer) {
+@@ -139,7 +_,7 @@
+             double knockbackPower = getKnockbackPower(attacker, livingEntity, vec3);
+             Vec3 vec31 = vec3.normalize().scale(knockbackPower);
+             if (knockbackPower > 0.0) {
+-                livingEntity.push(vec31.x, 0.7F, vec31.z);
++                livingEntity.push(vec31.x, 0.7F, vec31.z, attacker); // Paper - Add EntityKnockbackByEntityEvent and EntityPushedByEntityAttackEvent
+                 if (livingEntity instanceof ServerPlayer serverPlayer) {
+                     serverPlayer.connection.send(new ClientboundSetEntityMotionPacket(serverPlayer));
+                 }