message: Address clang tidy lint for copy by value in TF dialect.
diff: @@ -4343,7 +4343,7 @@ TensorFlowDialect::TensorFlowDialect(MLIRContext *context)
  // registered.
  allowUnknownOperations();
  - for (auto hook : *TensorFlowDialect::additional_operation_hooks_) {
  + for (const auto &hook : *TensorFlowDialect::additional_operation_hooks_) {
  hook(*this);
  }
  }
  