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leanprover / lean4 Public

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Backport

feat: `LawfulMonad` and `WPMonad` instances for `Option` and `OptionT` #13755

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feat: `LawfulMonad` and `WPMonad` instances for `Option` and `OptionT`

feat: `LawfulMonad` and `WPMonad` instances for `Option` and `OptionT` #13755

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