Don't lint *_interior_mutable_const on unions due to potential ICE.
#9539
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☀️ Test successful - checks-action_dev_test, checks-action_remark_test, checks-action_test |
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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
!Freezetype.