fix TestIssue1004 for v3.2, which has a different Sinbad asset

Author: stephengold

jme3-examples/src/main/java/jme3test/bullet/TestIssue1004.java

@@ -60,7 +60,7 @@ public static void main(String[] args) {
     public void simpleInitApp() {
         BulletAppState bulletAppState = new BulletAppState();
         stateManager.attach(bulletAppState);
-        String sinbadPath = "Models/Sinbad/SinbadOldAnim.j3o";
+        String sinbadPath = "Models/Sinbad/Sinbad.mesh.xml";
         Node sinbad = (Node) assetManager.loadModel(sinbadPath);
 
         Geometry geometry = (Geometry) sinbad.getChild(0);