needless_borrow: do not contradict dangerous_implicit_autorefs

[samueltardieu]

Rust 1.88 introduces the dangerous_implicit_autorefs lint which warns about using implicit autorefs on a place obtained from a raw pointer, as this may create aliasing issues.

Prevent clippy::needless_borrow from triggering in this case, by disabling the lint when taking a reference on a raw pointer dereference. There might be a better way for doing this in the long run with a finer way of distinguish the problematic cases, but this will prevent Clippy from contradicting the compiler in the meantime.

Fixes #14743

changelog: [needless_borrow]: do not contradict the compiler's dangerous_implicit_autorefs lint even though the refererences are not mandatory

@rustbot label +beta-nominated

Summary Notes

• Beta nomination for 1.88 by samueltardieu

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[samueltardieu]

@Urgau Any other cases you might be thinking about that would not be covered here? After our discussion, I switched to ignoring references on dereferences of raw pointers altogether.

[samueltardieu]

@rustbot note Beta nomination for 1.88

The dangerous_implicit_autorefs compiler lint that we contradict has already entered beta 1.88. We should also target the same version to avoid lints going back and forth.