Rollup merge of #106678 - Veykril:proc-macro-panic-abort, r=eholk

Warn when using panic-strategy abort for proc-macro crates

See https://github.com/rust-lang/rust/issues/82320, this simply warns for now as that seems like the best step that can be immediately taken (opposed to straight up rejecting or ignoring)

diff --cc compiler/rustc_interface/src/passes.rs
Simple merge