Don't infer limited attributes automatically by default.

This is an amendment to 4bfc2c0311.

Add an autolimits compiler option. When true, *limited will be inferred from the presence of the *range attributes.
When false, models where limited is not specified, and range is will fail to compile.

PiperOrigin-RevId: 472438650
Change-Id: I489098e879ee695030f44e0d8cd969787e75fb90

src/user/user_model.cc

@@ -79,6 +79,8 @@ mjCModel::mjCModel() {
   modelfiledir.clear();
 
   //------------------------ compiler settings
+  // TODO(b/245077553): Toggle to true by default.
+  autolimits = false;
   boundmass = 0;
   boundinertia = 0;
   settotalmass = -1;