Reset name when dragging, too

Author: nighthawk

Sources/TripKit/model/TKNamedCoordinate.swift

@@ -17,6 +17,7 @@ open class TKNamedCoordinate : NSObject, NSSecureCoding, Codable, TKClusterable
 
   public fileprivate(set) var coordinate: CLLocationCoordinate2D {
     didSet {
+      name = nil // Often closely tied to the location
       _address = nil
       _placemark = nil
     }