Function rustc_expand::base::pretty_printing_compatibility_hack

pub(crate) fn pretty_printing_compatibility_hack(
    nt: &Nonterminal, 
    sess: &ParseSess
) -> bool

This nonterminal looks like some specific enums from proc-macro-hack and procedural-masquerade crates. We need to maintain some special pretty-printing behavior for them due to incorrect asserts in old versions of those crates and their wide use in the ecosystem. See issue #73345 for more details. FIXME(#73933): Remove this eventually.