Rollup merge of #99064 - lyming2007:issue-97687-fix, r=estebank

Rollup merge of #99064 - lyming2007:issue-97687-fix, r=estebank

distinguish the method and associated function diagnostic information

Methods are defined within the context of a struct and their first parameter is always self
Associated functions don’t take self as a parameter
```
	modified:   compiler/rustc_typeck/src/check/method/suggest.rs
	modified:   src/test/ui/auto-ref-slice-plus-ref.stderr
	modified:   src/test/ui/block-result/issue-3563.stderr
	modified:   src/test/ui/issues/issue-28344.stderr
	modified:   src/test/ui/suggestions/dont-suggest-pin-array-dot-set.stderr
	modified:   src/test/ui/suggestions/suggest-methods.stderr
	modified:   src/test/ui/traits/trait-upcasting/subtrait-method.stderr
```