Stabilize const Atomic*::into_inner Partial stabilization for https://github.com/rust-lang/rust/issues/78729, for which the FCP has already completed. The other `into_inner` functions in that tracking issue (`UnsafeCell`, `Cell`, `RefCell`) are blocked on https://github.com/rust-lang/rust/issues/73255 for now. ```console error[E0493]: destructor of `UnsafeCell<T>` cannot be evaluated at compile-time --> library/core/src/cell.rs:2076:29 | 2076 | pub const fn into_inner(self) -> T { | ^^^^ the destructor for this type cannot be evaluated in constant functions 2077 | self.value 2078 | } | - value is dropped here ```