add lint for transmute from &T to &mut T of a ADT argument - #15992

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mendelsshop:catch_adt_mut_transmut

Commits on Jun 18, 2026

add lint for transmute from &T to &mut T of a ADT argument
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adding test for mutable_adt_argument_transmute lint
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more tests for mutable_adt_argument_transmute
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made `transmute_adt_argument` more resilant to transmutes of different adts with different arities
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made show all caught cases for a single expression together
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made `transmute_adt_argument` special case `fn` and closures where only the return type matter for transmute
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`transmute_adt_argument` added some comments, simplified some code
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`transmute_adt_arguement` moved away from `ty::walk`
mendelsshop
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