Merge #11334

11334: fix: don't panic in semantics due to `cfg_attr` disrupting offsets r=Veykril a=Veykril

Reduces the panic in https://github.com/rust-analyzer/rust-analyzer/issues/11298 to an early return, that means we won't resolve these cases again for now, but this is better than constantly panicking in highlighting and hovering.
bors r+

Co-authored-by: Lukas Wirth <lukastw97@gmail.com>