Rollup merge of #82415 - petrochenkov:modin3, r=davidtwco

expand: Refactor module loading

This is an accompanying PR to https://github.com/rust-lang/rust/pull/82399, but they can be landed independently.
See individual commits for more details.

Anyone should be able to review this equally well because all people actually familiar with this code left the project.

compiler/rustc_interface/src/passes.rs

@@ -302,8 +302,10 @@ fn configure_and_expand_inner<'a>(
             ..rustc_expand::expand::ExpansionConfig::default(crate_name.to_string())
         };
 
-        let extern_mod_loaded = |k: &ast::Crate, ident: Ident| {
-            pre_expansion_lint(sess, lint_store, k, &*ident.name.as_str())
+        let extern_mod_loaded = |ident: Ident, attrs, items, span| {
+            let krate = ast::Crate { attrs, items, span, proc_macros: vec![] };
+            pre_expansion_lint(sess, lint_store, &krate, &ident.name.as_str());
+            (krate.attrs, krate.items)
         };
         let mut ecx = ExtCtxt::new(&sess, cfg, &mut resolver, Some(&extern_mod_loaded));