Use diagnostic_item instead of match_def_path in lints

[estebank]

In multiple lints we currently use match_def_path to perform checks for specific paths. We should be using is_diagnostic_item instead (which is newer than those lints).

[RalfJung]

See #66075 for some more things that could be turned into diagnostic items.

[JohnTitor]

Looks like there's no use of match_def_path in the rustc (the work has been finished by #76910, clippy still uses it though), closing as completed.