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Rollup merge of #153016 - GuillaumeGomez:migrate-diag, r=JonathanBrouwer,Kivooeo
Migration of `LintDiagnostic` - part 2
Follow-up of https://github.com/rust-lang/rust/pull/152933.
More `LintDiagnostic` items being migrated to `Diagnostic`.
r? @JonathanBrouwer