Core/Spells: Rename SpellAttr0 to use official attribute names

src/server/game/Handlers/PetHandler.cpp

@@ -96,7 +96,7 @@ void WorldSession::HandlePetAction(WorldPacket& recvData)
         SpellInfo const* spell = (flag == ACT_ENABLED || flag == ACT_PASSIVE) ? sSpellMgr->GetSpellInfo(spellid) : nullptr;
         if (!spell)
             return;
-        if (!spell->HasAttribute(SPELL_ATTR0_CASTABLE_WHILE_DEAD))
+        if (!spell->HasAttribute(SPELL_ATTR0_ALLOW_CAST_WHILE_DEAD))
             return;
     }