Auto merge of #88703 - cjgillot:lazymod, r=petrochenkov

Gather module items after lowering.

This avoids having a non-local analysis inside lowering.

By implementing `hir_module_items` using a visitor, we make sure that iterations and visitors are consistent.

compiler/rustc_middle/src/query/mod.rs

@@ -52,8 +52,8 @@ rustc_queries! {
     ///
     /// This can be conveniently accessed by `tcx.hir().visit_item_likes_in_module`.
     /// Avoid calling this query directly.
-    query hir_module_items(key: LocalDefId) -> &'tcx hir::ModuleItems {
-        eval_always
+    query hir_module_items(key: LocalDefId) -> rustc_middle::hir::ModuleItems {
+        storage(ArenaCacheSelector<'tcx>)
         desc { |tcx| "HIR module items in `{}`", tcx.def_path_str(key.to_def_id()) }
     }