Remove `mjWARN_VGEOMFULL, handle visual geom buffer full warnings in mjvScene`.

PiperOrigin-RevId: 896483023
Change-Id: I6dde2c20d8e8e229cf95e1f002dd10525d3376e6

test/engine/engine_vis_visualize_test.cc

@@ -101,7 +101,6 @@ TEST_F(MjvSceneTest, UpdateSceneGeomsExhausted) {
   mjv_updateScene(model, data, &opt_, &pert_, &cam_, mjCAT_ALL, &scn_);
   EXPECT_EQ(scn_.status, 1);
   EXPECT_EQ(scn_.ngeom, maxgeoms);
-  EXPECT_EQ(data->warning[mjWARN_VGEOMFULL].number, 1);
 
   mj_deleteData(data);
   FreeSceneObjects();