Disable MLIR bridge for the test points that MLIR bridge silently fails

PiperOrigin-RevId: 676660290

Author: tensorflower-gardener

tensorflow_privacy/privacy/fast_gradient_clipping/registry_functions/embedding_tpu_test.py

@@ -20,6 +20,7 @@
 class GradNormTpuTest(embedding_test.GradNormTest):
 
   def setUp(self):
+    tf.config.experimental.disable_mlir_bridge()
     super(embedding_test.GradNormTest, self).setUp()
     self.strategy = common_test_utils.create_tpu_strategy()
     self.assertIn('TPU', self.strategy.extended.worker_devices[0])

tensorflow_privacy/privacy/fast_gradient_clipping/registry_functions/nlp_on_device_embedding_tpu_test.py

@@ -20,6 +20,7 @@
 class GradNormTpuTest(nlp_on_device_embedding_test.GradNormTest):
 
   def setUp(self):
+    tf.config.experimental.disable_mlir_bridge()
     super(nlp_on_device_embedding_test.GradNormTest, self).setUp()
     self.strategy = common_test_utils.create_tpu_strategy()
     self.assertIn('TPU', self.strategy.extended.worker_devices[0])