Auto merge of #9573 - Alexendoo:needless-borrowed-ref-slice, r=dswij

lint nested patterns and slice patterns in `needless_borrowed_reference`

Now lints in positions other than top level, e.g. `Some(&ref a)`. Or patterns are excluded as that can cause issues

Slice patterns of `ref`s are now linted, e.g. `&[ref a, ref b]`. An easy one to walk into as you might expect that to match against a slice you should use `&[]`,  then to get around a `cannot move out of type [T]` error you apply a `ref`

changelog: [`needless_borrowed_reference`]: lint nested patterns and slice patterns

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