Fix test failure when shardy is not enabled.

PiperOrigin-RevId: 679713372

tests/shard_map_test.py

@@ -37,6 +37,7 @@
 from jax._src import core
 from jax._src import prng
 from jax._src import test_util as jtu
+from jax._src.lib.mlir.dialects import sdy
 from jax._src.util import safe_zip, safe_map, partition_list, merge_lists
 from jax._src.ad_checkpoint import saved_residuals
 from jax._src.mesh import AbstractMesh
@@ -2636,6 +2637,8 @@ def fwd(a):
 
 
 @jtu.with_config(jax_use_shardy_partitioner=True)
+# TODO(phawkins): enable this test unconditionally once shardy is the default.
+@unittest.skipIf(sdy is None, "shardy is not enabled")
 class SdyIntegrationTest(jtu.JaxTestCase):
   # Verify we can lower to a `ManualComputationOp`.
   def test_shardy_collective_permute(self):