Do not introduce bindings for types and consts in HRTB.

compiler/rustc_resolve/src/late.rs

@@ -1981,7 +1981,12 @@ fn with_generic_param_rib<'c, F>(
                     continue;
                 }
             };
-            let res = Res::Def(def_kind, def_id.to_def_id());
+
+            let res = match kind {
+                ItemRibKind(..) | AssocItemRibKind => Res::Def(def_kind, def_id.to_def_id()),
+                NormalRibKind => Res::Err,
+                _ => bug!("Unexpected rib kind {:?}", kind),
+            };
             self.r.record_partial_res(param.id, PartialRes::new(res));
             rib.bindings.insert(ident, res);
         }

src/test/ui/higher-rank-trait-bounds/hrtb-wrong-kind.rs

+fn a() where for<T> T: Copy {}
+//~^ ERROR only lifetime parameters can be used in this context
+
+fn b() where for<const C: usize> [(); C]: Copy {}
+//~^ ERROR only lifetime parameters can be used in this context
+
+fn main() {}

src/test/ui/higher-rank-trait-bounds/hrtb-wrong-kind.stderr

+error: only lifetime parameters can be used in this context
+  --> $DIR/hrtb-wrong-kind.rs:1:18
+   |
+LL | fn a() where for<T> T: Copy {}
+   |                  ^
+
+error: only lifetime parameters can be used in this context
+  --> $DIR/hrtb-wrong-kind.rs:4:24
+   |
+LL | fn b() where for<const C: usize> [(); C]: Copy {}
+   |                        ^
+
+error: aborting due to 2 previous errors
+