Auto merge of #120943 - petrochenkov:somehir3, r=oli-obk

Create some minimal HIR for associated opaque types

`LocalDefId`s for opaque types in traits and impls are created after AST -> HIR lowering, so they don't have corresponding HIR and return their various properties through fed queries.

In this PR I also feed some core HIR-related queries for these `LocalDefId`s (which happen to be HIR owners).
As a result all `LocalDefId`s now have corresponding `HirId`s and HIR nodes, and "optional" methods like `opt_local_def_id_to_hir_id` and `opt_hir_node_by_def_id` can be removed.

Follow up to https://github.com/rust-lang/rust/pull/120206.

compiler/rustc_lint/src/late.rs

@@ -356,7 +356,7 @@ pub fn late_lint_mod<'tcx, T: LateLintPass<'tcx> + 'tcx>(
         cached_typeck_results: Cell::new(None),
         param_env: ty::ParamEnv::empty(),
         effective_visibilities: tcx.effective_visibilities(()),
-        last_node_with_lint_attrs: tcx.local_def_id_to_hir_id(module_def_id.into()),
+        last_node_with_lint_attrs: tcx.local_def_id_to_hir_id(module_def_id),
         generics: None,
         only_module: true,
     };

compiler/rustc_lint/src/levels.rs

@@ -191,6 +191,7 @@ fn shallow_lint_levels_on(tcx: TyCtxt<'_>, owner: hir::OwnerId) -> ShallowLintLe
                 levels.add_id(hir::CRATE_HIR_ID);
                 levels.visit_mod(mod_, mod_.spans.inner_span, hir::CRATE_HIR_ID)
             }
+            hir::OwnerNode::AssocOpaqueTy(..) => unreachable!(),
         },
     }