Fix #118116: Only hide solid mesh if overlays are enabled

When the retopology overlay is enabled, the edit mesh is not drawn
in solid mode. When you disabled overlays however, it would not be
drawn in any mode, which understandably confused users.
Now it checks whether overlays are enabled before it hides the solid mesh.

Pull Request: https://projects.blender.org/blender/blender/pulls/118422

source/blender/draw/intern/draw_manager_c.cc

@@ -188,7 +188,7 @@ bool DRW_object_is_renderable(const Object *ob)
   if (ob->type == OB_MESH) {
     if ((ob == DST.draw_ctx.object_edit) || DRW_object_is_in_edit_mode(ob)) {
       View3D *v3d = DST.draw_ctx.v3d;
-      if (v3d && RETOPOLOGY_ENABLED(v3d)) {
+      if (v3d && ((v3d->flag2 & V3D_HIDE_OVERLAYS) == 0) && RETOPOLOGY_ENABLED(v3d)) {
         return false;
       }
     }