Un-xfail test_static_type_check (#371)

Co-authored-by: Michael Wang <isVoid@users.noreply.github.com>
Co-authored-by: Graham Markall <535640+gmarkall@users.noreply.github.com>

Author: isVoid

numbast/src/numbast/experimental/mlir/static/tests/test_struct_static_bindings.py

@@ -109,10 +109,6 @@ def kernel(arr):
     assert arr.copy_to_host() == pytest.approx([42])
 
 
-@pytest.mark.xfail(
-    reason="numba-cuda-mlir does not support isinstance lowering for generated static types",
-    strict=True,
-)
 def test_static_type_check(decl, impl):
     MyInt = decl["MyInt"]