Auto merge of #118500 - ZetaNumbers:tcx_hir_refactor, r=petrochenkov

Move some methods from `tcx.hir()` to `tcx`

https://github.com/rust-lang/rust/pull/118256#issuecomment-1826442834

Renamed:
- find -> opt_hir_node
- get -> hir_node
- find_by_def_id -> opt_hir_node_by_def_id
- get_by_def_id -> hir_node_by_def_id

compiler/rustc_mir_build/src/build/mod.rs

@@ -572,7 +572,7 @@ fn construct_const<'a, 'tcx>(
     let hir_id = tcx.local_def_id_to_hir_id(def);
 
     // Figure out what primary body this item has.
-    let (span, const_ty_span) = match tcx.hir().get(hir_id) {
+    let (span, const_ty_span) = match tcx.hir_node(hir_id) {
         Node::Item(hir::Item {
             kind: hir::ItemKind::Static(ty, _, _) | hir::ItemKind::Const(ty, _, _),
             span,

compiler/rustc_mir_build/src/thir/cx/mod.rs

@@ -110,7 +110,7 @@ impl<'tcx> Cx<'tcx> {
 
     #[instrument(level = "debug", skip(self))]
     fn pattern_from_hir(&mut self, p: &hir::Pat<'_>) -> Box<Pat<'tcx>> {
-        let p = match self.tcx.hir().get(p.hir_id) {
+        let p = match self.tcx.hir_node(p.hir_id) {
             Node::Pat(p) => p,
             node => bug!("pattern became {:?}", node),
         };