PR #119097 made the decision to make all `IntoDiagnostic` impls generic, because this allowed a bunch of nice cleanups. But four hand-written impls were unintentionally overlooked. This commit makes them generic.
PR #119097 made the decision to make all `IntoDiagnostic` impls generic, because this allowed a bunch of nice cleanups. But four hand-written impls were unintentionally overlooked. This commit makes them generic.