Clarify assert statement in test_get_vector_length

tests/tensor/test_basic.py

@@ -1019,7 +1019,7 @@ def test_get_vector_length():
     mode = aesara.compile.get_default_mode().excluding("constant_folding")
     f = function([x, y], [b, c, a], mode=mode)
     topo = f.maker.fgraph.toposort()
-    assert [True for node in topo if isinstance(node.op, MakeVector)]
+    assert any([True for node in topo if isinstance(node.op, MakeVector)])
 
     assert np.allclose(f(4, 5), [5, 9, 4])