fix(Core/SpellEffects): Make Shadowmeld drop combat (#3272)

Co-authored-by: Francesco Borzì <borzifrancesco@gmail.com>
Co-authored-by: Stefano Borzì <stefanoborzi32@gmail.com>

src/server/game/Spells/SpellEffects.cpp

@@ -4192,7 +4192,7 @@ void Spell::EffectSanctuary(SpellEffIndex /*effIndex*/)
     else
     {
         unitTarget->getHostileRefManager().UpdateVisibility(m_spellInfo->Id == 59646); // Night Elf: Shadowmeld
-        unitTarget->CombatStop(false);
+        unitTarget->CombatStop(true);
     }
 
     UnitList targets;