[Xtro] Add missing ignore in legacy. (#16460)

Fixes https://github.com/xamarin/xamarin-macios/issues/16442.

tests/xtro-sharpie/macOS-CoreLocation.ignore

@@ -2,5 +2,6 @@
 !missing-protocol-member! CLLocationManagerDelegate::locationManager:didRangeBeacons:inRegion: not found
 !missing-protocol-member! CLLocationManagerDelegate::locationManager:rangingBeaconsDidFailForRegion:withError: not found
 !missing-selector! CLBeaconRegion::initWithUUID:identifier: not bound
+!extra-enum-value! Managed value 4 for CLAuthorizationStatus.AuthorizedWhenInUse is available for the current platform while the value in the native header is not
 
 # Fixed in .NET