Core/Entities: streamline GetPctModifierValue return value to safeguard against evil

Author: ccrs

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

@@ -9145,7 +9145,7 @@ float Unit::GetPctModifierValue(UnitMods unitMod, UnitModifierPctType modifierTy
     if (unitMod >= UNIT_MOD_END || modifierType >= MODIFIER_TYPE_PCT_END)
     {
         TC_LOG_ERROR("entities.unit", "attempt to access non-existing modifier value from UnitMods!");
-        return 0.0f;
+        return 1.0f;
     }
 
     return m_auraPctModifiersGroup[unitMod][modifierType];