doctor list handled to be cleared when going back

lib/presentation/book_appointment/search_doctor_by_name.dart

@@ -88,7 +88,7 @@ class _SearchDoctorByNameState extends State<SearchDoctorByName> {
                             ),
                           ),
                           Visibility(
-                            visible: bookAppointmentsViewModel.doctorsList.isNotEmpty,
+                            visible: context.watch<BookAppointmentsViewModel>().doctorsList.isNotEmpty,
                             child: SizedBox(
                               height: 56.h,
                               width: 56.h,
@@ -264,4 +264,9 @@ class _SearchDoctorByNameState extends State<SearchDoctorByName> {
       ),
     );
   }
+  @override
+  void dispose() {
+    bookAppointmentsViewModel.doctorsList.clear();
+    super.dispose();
+  }
 }