gameobject summoner

Port From (https://github.com/TrinityCore/TrinityCore/commit/5f545f540216d3b94c26e4aeda50c8bb8d5c3d74)

Source/Scripts/Pets/Hunter.cs

@@ -72,7 +72,7 @@ namespace Scripts.Pets
 
                 if (me.IsSummon() && !me.GetThreatManager().GetFixateTarget())
                 { // find new target
-                    Unit summoner = me.ToTempSummon().GetSummoner();
+                    Unit summoner = me.ToTempSummon().GetSummonerUnit();
 
                     List<Unit> targets = new();
                     foreach (var pair in summoner.GetCombatManager().GetPvPCombatRefs())

Source/Scripts/Pets/Priest.cs

@@ -55,9 +55,13 @@ namespace Scripts.Pets
         {
             public npc_pet_pri_shadowfiend(Creature creature) : base(creature) { }
 
-            public override void IsSummonedBy(Unit summoner)
+            public override void IsSummonedBy(WorldObject summoner)
             {
-                if (summoner.HasAura(SpellIds.GlyphOfShadowFiend))
+                Unit unitSummoner = summoner.ToUnit();
+                if (unitSummoner == null)
+                    return;
+
+                if (unitSummoner.HasAura(SpellIds.GlyphOfShadowFiend))
                     DoCastAOE(SpellIds.ShadowFiendDeath);
             }
         }