Auto merge of #106810 - oli-obk:resolver_reverse_plumbing, r=petrochenkov

Various cleanups around pre-TyCtxt queries and functions

part of #105462

based on rust-lang/rust#106776 (everything starting at [0e2b39f](rust-lang/rust@0e2b39f) is new in this PR)

r? `@petrochenkov`

I think this should be most of the uncontroversial part of #105462.

Author: bors

src/debuginfo/mod.rs

@@ -68,7 +68,7 @@ impl DebugContext {
             .working_dir
             .to_string_lossy(FileNameDisplayPreference::Remapped)
             .into_owned();
-        let (name, file_info) = match tcx.sess.local_crate_source_file.clone() {
+        let (name, file_info) = match tcx.sess.local_crate_source_file() {
             Some(path) => {
                 let name = path.to_string_lossy().into_owned();
                 (name, None)