message: Look through custom unary elementwise ops
  Summary:
  Use default rule for looking through.
  Ref T64117.
  Test Plan: CI
  Reviewers: #tensorflow, #framework_ip_review_-_any_oss_or_third-party_code_use_has_been_approved, georgep, alfiee
  Maniphest Tasks: T64117
diff: @@ -53,7 +53,7 @@ class HloElementwiseUnaryBase : public HloPoplarInstruction {
  const FindConsumersExtensionResults FindConsumers(
  FindConsumersExtensionParams params) const override {
  - return FindConsumersExtensionResults::DoNotFindConsumers();
  + return FindConsumersExtensionResults();
  }
  bool AllowNonInplaceLowering() const override { return true; }
  