Marks Mac_android entrypoint_dart_registrant to be unflaky (#102223)
Marks Mac_android entrypoint_dart_registrant to be unflaky (#102223)

* Marks Mac_android entrypoint_dart_registrant to be unflaky

* update mode

Co-authored-by: Keyong Han <e607beaf20a0dbd248fa521067c572a30c7f385a@google.com>
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