FIX: change AMS n3s ams_id & tray_id from 512 to 128

Jira: [STUDIO-13477]
Change-Id: I3844cb59df18220a22d8ff7524216b9fff2b6632
(cherry picked from commit 8c7b66d24b1e795c3070883f3f439cf160b38037)

src/slic3r/GUI/AmsMappingPopup.hpp

@@ -76,6 +76,7 @@ struct TrayData
 class MaterialItem: public wxPanel
 {
 protected:
+    int m_text_pos_x =  0;
     int m_text_pos_y = -1;
     bool m_dropdown_allow_painted = true;