Change xla_bridge_test to expect a bytes FDO profile instead of a string in future jaxlib versions.

Change in preparation for nanobind migration.

PiperOrigin-RevId: 613329489

Author: hawkinsp

tests/xla_bridge_test.py

@@ -26,6 +26,7 @@
 from jax._src import xla_bridge as xb
 from jax._src.interpreters import xla
 from jax._src.lib import xla_client as xc
+from jax._src.lib import xla_extension_version
 
 config.parse_flags_with_absl()
 
@@ -55,7 +56,8 @@ def test_set_fdo_profile(self):
         num_replicas=1, num_partitions=1, fdo_profile=b"test_profile"
     )
     self.assertEqual(
-        compile_options.executable_build_options.fdo_profile, "test_profile"
+        compile_options.executable_build_options.fdo_profile,
+        b"test_profile" if xla_extension_version >= 242 else "test_profile"
     )
 
   def test_autofdo_profile(self):
@@ -386,6 +388,5 @@ def test_experimental_warning(self):
     )
 
 
-
 if __name__ == "__main__":
   absltest.main(testLoader=jtu.JaxTestLoader())