Core/Spells: Unit::MeleeDamageBonusTaken will now use the SchoolMask of melee attack spells when spellInfo is provided

ref https://github.com/TrinityCore/TrinityCore/issues/27523

src/server/game/Entities/Unit/Unit.cpp

@@ -8040,7 +8040,7 @@ uint32 Unit::MeleeDamageBonusTaken(Unit* attacker, uint32 pdamage, WeaponAttackT
 
     int32 TakenFlatBenefit = 0;
 
-    uint32 meleeDamageSchoolMask = attacker->GetMeleeDamageSchoolMask();
+    uint32 meleeDamageSchoolMask = spellProto ? spellProto->SchoolMask : attacker->GetMeleeDamageSchoolMask();
 
     // ..taken
     TakenFlatBenefit += GetTotalAuraModifier(SPELL_AURA_MOD_DAMAGE_TAKEN, [meleeDamageSchoolMask, spellProto](AuraEffect const* aurEff)