Rollup merge of #98431 - WaffleLapkin:mut_pat_suggestions, r=compiler-errors

Suggest defining variable as mutable on `&mut _` type mismatch in pats

Suggest writing `mut a` where `&mut a` was written but a non-ref type provided.

Since we still don't have "apply either one of the suggestions but not both" kind of thing, the interaction with the suggestion of removing `&[mut]` or moving it to the type is weird, and idk how to make it better..

r? ``@compiler-errors``