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-- 40996ab1a05f328c2b5d1b940abb189d43f646de by Levi Burner <leviburner@gmail.com>: [Python Viewer] load mjb files, fixes #1421 COPYBARA_INTEGRATE_REVIEW=https://github.com/google-deepmind/mujoco/pull/1535 from aftersomemath:simulate-load-mjb 40996ab1a05f328c2b5d1b940abb189d43f646de PiperOrigin-RevId: 617913250 Change-Id: I09e858495784122c29e0a3895ce43b95010003bc