Check mob-damage for potion splashes from e.g. witches.

Note that bypass bypasses this if the player with bypass is the target of the potion, but only for the player with bypass.

Fixes #2134.

Author: wizjany

worldguard-bukkit/src/main/java/com/sk89q/worldguard/bukkit/listener/EventAbstractionListener.java

@@ -1015,7 +1015,6 @@ public void onPotionSplash(PotionSplashEvent event) {
 
         // Fire item interaction event
         Events.fireToCancel(event, new UseItemEvent(event, cause, world, potion.getItem()));
-
         // Fire entity interaction event
         if (!event.isCancelled()) {
             int blocked = 0;
@@ -1027,8 +1026,11 @@ public void onPotionSplash(PotionSplashEvent event) {
                         ? new DamageEntityEvent(event, cause, affected) :
                         new UseEntityEvent(event, cause, affected);
 
-                // Consider the potion splash flag
+                // Consider extra relevant flags
                 delegate.getRelevantFlags().add(Flags.POTION_SPLASH);
+                if (potion.getShooter() instanceof LivingEntity shooter && !(shooter instanceof Player) && affected instanceof Player) {
+                    delegate.getRelevantFlags().add(Flags.MOB_DAMAGE);
+                }
 
                 if (Events.fireAndTestCancel(delegate)) {
                     event.setIntensity(affected, 0);