Disable failing TPU presubmit test.

Fails with SIGILL in ShardingInTypesTest.test_conv_general_dilated.

https://github.com/jax-ml/jax/actions/runs/20105632869/job/57688572609

PiperOrigin-RevId: 842710731

Author: danielsuo

tests/pjit_test.py

@@ -8006,6 +8006,8 @@ def f2(x, i, j):
       return x.at[i].set(x_j, out_sharding=jax.typeof(x).sharding)
     f2(x,i,j)  # doesn't crash
 
+  # TODO(b/467679041): SIGILL in libtpu nightly with freethreaded Python.
+  @jtu.skip_on_devices("tpu")
   @jtu.with_explicit_mesh((4, 2), ('x', 'y'))
   def test_conv_general_dilated(self, mesh):
     arr = jax.device_put(np.zeros((16, 128, 8)), P('x', 'y'))