Freset: avoid multiple reseting of properties (bug #43960) * graphics.in.h (base_graphics_object::get_defaults_list): new method * graphics.in.h (base_graphics_object::build_user_defaults_map): declare new method * graphics.in.h (graphics_object::get_defaults_list): new method * graphics.in.h (graphics_object::build_user_defaults_map): new method * graphics.in.h (root_figure::get_defaults_list, figure::get_defaults_list, axes::get_defaults_list, uitoolbar::get_defaults_list): new methods * graphics.cc (base_graphics_object::build_user_defaults_map): build a list of all local and ancestor defaults. * graphics.cc (xreset_default_properties): use build_user_defaults_map method to replace factory defaults by those defined in user defaults map * graphics.cc (base_graphics_object::reset_default_properties, root_figure::reset_default_properties, figure::reset_default_properties): remove override_default.