Decrease editor shadow maximum distance to match DirectionalLight3D default

This improves shadow texel density, leading to improved visual quality
(and higher performance in large scenes, as fewer objects will be
included in the shadow map).

editor/plugins/node_3d_editor_plugin.cpp

@@ -7607,7 +7607,7 @@ void Node3DEditor::_load_default_preview_settings() {
 	environ_tonemap_button->set_pressed(true);
 	environ_ao_button->set_pressed(false);
 	environ_gi_button->set_pressed(false);
-	sun_max_distance->set_value(250);
+	sun_max_distance->set_value(100);
 
 	sun_color->set_pick_color(Color(1, 1, 1));
 	sun_energy->set_value(1.0);