message: Allow bool dtype for popdist broadcast
  Summary: As titled.
  Test Plan: CI
  Reviewers: #tensorflow, #framework_ip_review_-_any_oss_or_third-party_code_use_has_been_approved, christiana
  Maniphest Tasks: T69893
diff: @@ -17,7 +17,7 @@ limitations under the License.
  namespace tensorflow {
  REGISTER_OP("PopdistBroadcast")
  - .Attr("T: numbertype")
  + .Attr("T: {numbertype, bool}")
  .Input("tensor: T")
  .Attr("tensor_name: string")
  .Output("sum: T")
  