Do not navigate to vm-connect page upon disconnect

runtime/bin/vmservice/observatory/lib/src/service/object.dart

Index: runtime/bin/vmservice/observatory/lib/src/service/object.dart
diff --git a/runtime/bin/vmservice/observatory/lib/src/service/object.dart b/runtime/bin/vmservice/observatory/lib/src/service/object.dart
index a2037d336bb6e078fe500a9522861abdf0e77635..4fb2ba180ecd3fa0fc0f052877e1e632de2ccf03 100644
--- a/runtime/bin/vmservice/observatory/lib/src/service/object.dart
+++ b/runtime/bin/vmservice/observatory/lib/src/service/object.dart
@@ -1303,6 +1303,10 @@ class ServiceException extends ServiceObject {
 class ServiceEvent extends ServiceObject {
   ServiceEvent._empty(ServiceObjectOwner owner) : super._empty(owner);
 
+  ServiceEvent.vmDisconencted() : super._empty(null) {
+    eventType = 'VMDisconnected';
+  }
+
   @observable String eventType;
   @observable ServiceMap breakpoint;
   @observable ServiceMap exception;