message: remote_parameter_parallel_combiner_test: Fix tf2 difference
  Summary: Ref T26532.
  Test Plan: Passing in tf2.
  Reviewers: markf, #tensorflow, #framework_ip_review_-_any_oss_or_third-party_code_use_has_been_approved, georgep
  Maniphest Tasks: T26532
diff: @@ -501,7 +501,7 @@ ENTRY top {
  EXPECT_OK(load1->AddControlDependencyTo(load3));
  EXPECT_OK(load4->AddControlDependencyTo(load2));
  - EXPECT_OK(module->Verify());
  + module->VerifyOrAddFailure("module should be valid before pass");
  // When: Running the pass.
  TensorAllocationMap allocation_map;
  @@ -509,13 +509,10 @@ ENTRY top {
  .RunOnComputation(module->entry_computation())
  .ValueOrDie());
  - // Then: Only two loads should be combined.
  + // Then: Only one combined instruction and module still valid (no cycles).
  const auto seq = module->entry_computation()->MakeInstructionPostOrder();
  EXPECT_EQ(absl::c_count_if(seq, is_load), 3);
  -
  - // And there should be no cycles.
  - const auto verified = module->Verify();
  - EXPECT_OK(verified) << verified.error_message();
  + module->VerifyOrAddFailure("module should be valid after pass");
  }
  } // namespace
  