FIX: icon issue for copying

Jira: STUDIO-4168

Icon issue when filling bed with copies

Change-Id: I61a03ecae02b75602c236ed2810e9c9cfe5a19f9
(cherry picked from commit b5079f8a2e79f19f65803f23ef4fd83aff17c84a)

src/slic3r/GUI/Jobs/FillBedJob.cpp

@@ -287,6 +287,7 @@ void FillBedJob::finalize()
         auto obj_list = m_plater->sidebar().obj_list();
         for (size_t i = oldSize; i < newSize; i++) {
             obj_list->add_object_to_list(i, true, true, false);
+            obj_list->update_printable_state(i, 0);
         }
 
         BOOST_LOG_TRIVIAL(debug) << __FUNCTION__ << ": paste_objects_into_list";