We are currently experiencing a crash at runtime reproducible in Xcode 14.0 onward due to a dyld missing symbol for NSCoreDataCoreSpotlightDelegate.indexDidUpdateNotification which occurs on devices that are running iOS 15.x.
I have discovered using NSNotification.Name.NSCoreDataCoreSpotlightDelegateIndexDidUpdate instead seems to workaround this issue and will allow the previously working notification behavior to continue working. Wanted to share this for others that might've run into the same issue. Hopefully an upcoming Xcode release can remedy this.
If an Xcode engineer could take a look at this it would be much appreciated!