Fix Observation notification not triggering on nested properties

[dianaafanador3]

This fix will create false positive PropertyChanges for projection properties which have the same origin property root.

  - warning: For projected properties where the original property has the same root property name,
             this will trigger a `PropertyChange` for each of the Projected properties even though
             the change only corresponds to one of them.
             For the following `Projection` object
             ```swift
             class PersonProjection: Projection<Person> {
                 @Projected(\Person.firstName) var name
                 @Projected(\Person.address.country) originCountry
                 @Projected(\Person.address.phone.number) mobile
             }
             let token = projectedPerson.observe { changes in
                 if case .change(_, let propertyChanges) = changes {
                     propertyChanges[0].newValue as? String, "Winterfell" // Will notify the new value
                     propertyChanges[1].newValue as? String, "555-555-555" // Will notify with the current value, which hasn't change.
                 }
             })
             try realm.write {
                 person.address.country = "Winterfell"
             }
             ```