PathNode.matching should not compare `dynamic` params

[christopherthielen]

  // Test for #2796
  it("should not re-resolve data, when redirecting to self with dynamic parameter update", (done) => {
    let $registry = router.stateRegistry;
    let $state = router.stateService;
    let $transitions = router.transitionService;
    let resolveCount = 0;

    $registry.register({
      name: 'dynamic',
      url: '/dynamic/{param}',
      params: {
        param: { dynamic: true }
      },
      resolve: {
        data: () => {
          new Promise(resolve => resolve('Expensive data ' + resolveCount++))
        }
      }
    });

    $transitions.onEnter({entering: "dynamic"}, trans => {
      if (trans.params().param === 'initial')
        return $state.target("dynamic", { param: 'redirected' });
    });

    $state.go("dynamic", { param: 'initial'}).then(() => {
      expect($state.current.name).toBe("dynamic");
      expect($state.params.param).toBe('redirected');
      expect(resolveCount).toBe(1);
      done();
    });
  });
});

[christopherthielen]

#2796