c153bd6237
Don't lint `*_interior_mutable_const` on unions due to potential ICE. fixes #9445 cc rust-lang/rust#101113 This started ICE'ing sometime last month due to stricter UB checks. I'm not sure how we could check the value of a union as MIRI doesn't seem to store which field is currently active. changelog: Don't ICE on const unions containing a `!Freeze` type.