Allow to fusestatic a body if it doesn't generate a referencing error.

PiperOrigin-RevId: 769189929
Change-Id: I62f512813ea330da088b28d39373df39be10a602

src/user/user_objects.h

@@ -786,6 +786,7 @@ class mjCCamera : public mjCCamera_, private mjsCamera {
   void CopyFromSpec(void);
   void PointToLocal(void);
   void NameSpace(const mjCModel* m);
+  void ResolveReferences(const mjCModel* m);
 };
 
 
@@ -831,6 +832,7 @@ class mjCLight : public mjCLight_, private mjsLight {
   void CopyFromSpec(void);
   void PointToLocal(void);
   void NameSpace(const mjCModel* m);
+  void ResolveReferences(const mjCModel* m);
 };