Core/Spells: fix Hand of Justice proc chance and reduce it past level 60.

Port From (https://github.com/TrinityCore/TrinityCore/commit/b91eac6a1c377c14ebe2b66104ac02e2f9a01ad4)

Source/Framework/Constants/Spells/SpellConst.cs

@@ -2228,7 +2228,8 @@ namespace Framework.Constants
         ReqExpOrHonor = 0x01, // requires proc target to give exp or honor for aura proc
         TriggeredCanProc = 0x02, // aura can proc even with triggered spells
         ReqPowerCost = 0x04, // requires triggering spell to have a power cost for aura proc
-        ReqSpellmod = 0x08  // requires triggering spell to be affected by proccing aura to drop charges
+        ReqSpellmod = 0x08,  // requires triggering spell to be affected by proccing aura to drop charges
+        ReduceProc60 = 0x80  // aura should have a reduced chance to proc if level of proc Actor > 60
     }
 
     // Spell aura states

Source/Game/Spells/Auras/Aura.cs

@@ -1798,6 +1798,11 @@ namespace Game.Spells
                 if (modOwner != null)
                     modOwner.ApplySpellMod(GetId(), SpellModOp.ChanceOfSuccess, ref chance);
             }
+
+            // proc chance is reduced by an additional 3.333% per level past 60
+            if (procEntry.AttributesMask.HasAnyFlag(ProcAttributes.ReduceProc60) && eventInfo.GetActor().getLevel() > 60)
+                chance = Math.Max(0.0f, (1.0f - ((eventInfo.GetActor().getLevel() - 60) * 1.0f / 30.0f)) * chance);
+
             return chance;
         }