Auto merge of #115486 - compiler-errors:dont-capture-late-pls, r=cjgillot

Correctly deny late-bound lifetimes from parent in anon consts and TAITs

Reuse the `AnonConstBoundary` scope (introduced in #108553, renamed in this PR to `LateBoundary`) to deny late-bound vars of *all* kinds (ty/const/lifetime) in anon consts and TAITs.

Side-note, but I would like to consolidate this with the error reporting for RPITs (E0657):
https://github.com/rust-lang/rust/blob/c4f25777a08cd64b710e8a9a6159e67cbb35e6f5/compiler/rustc_hir_analysis/src/collect/resolve_bound_vars.rs#L733-L754 but the semantics about what we're allowed to capture there are slightly different, so I'm leaving that untouched.

Fixes #115474

Author: bors