[mlir][transform][python] Add test for AnyValueType binding.

[ingomueller-net]

Summary

I had forgotten to commit that test as part of
https://reviews.llvm.org/D157638.

[ingomueller-net]

Trivial change, will self-accept once CI passed.

mlir/test/python/dialects/transform.py

 
 @run
 def testTypes():
     # CHECK-LABEL: TEST: testTypes
     # CHECK: !transform.any_op
     any_op = transform.AnyOpType.get()
     print(any_op)
 
+    # CHECK: !transform.any_value
+    any_value = transform.AnyValueType.get()
+    print(any_value)
+
     # CHECK: !transform.op<"foo.bar">
     # CHECK: foo.bar
     concrete_op = transform.OperationType.get("foo.bar")
     print(concrete_op)
     print(concrete_op.operation_name)
 
 
 @run