Core/Spells: Implemented SPELL_ATTR9_IGNORE_SCHOOL_LOCKOUT

Port From (https://github.com/TrinityCore/TrinityCore/commit/0b8eed2d547acc0ba115198cb306c4f9127af807)

Source/Framework/Constants/Spells/SpellConst.cs

@@ -1984,7 +1984,7 @@ namespace Framework.Constants
         DoNotDisplayPowerCost = 0x8000, // Do Not Display Power Cost (client only)
         NextModalSpellRequiresSameUnitTarget = 0x10000, // Prevents automatically casting the spell from SpellClassOptions::ModalNextSpell after current spell if target was changed (client only)
         AutocastOffByDefault = 0x20000, // AutoCast Off By Default
-        Unk18 = 0x40000, // 18
+        IgnoreSchoolLockout = 0x40000, // Ignore School Lockout
         Unk19 = 0x80000, // 19
         Unk20 = 0x100000, // 20
         Unk21 = 0x200000, // 21

Source/Game/Spells/SpellHistory.cs

@@ -211,7 +211,7 @@ namespace Game.Spells
 
         public bool IsReady(SpellInfo spellInfo, uint itemId = 0)
         {
-            if (spellInfo.PreventionType.HasAnyFlag(SpellPreventionType.Silence))
+            if (!spellInfo.HasAttribute(SpellAttr9.IgnoreSchoolLockout) && spellInfo.PreventionType.HasFlag(SpellPreventionType.Silence))
                 if (IsSchoolLocked(spellInfo.GetSchoolMask()))
                     return false;
 
@@ -741,6 +741,9 @@ namespace Game.Spells
                 if (!spellInfo.PreventionType.HasAnyFlag(SpellPreventionType.Silence))
                     continue;
 
+                if (spellInfo.HasAttribute(SpellAttr9.IgnoreSchoolLockout))
+                    continue;
+
                 if ((schoolMask & spellInfo.GetSchoolMask()) == 0)
                     continue;