Rollup merge of #145462 - Kivooeo:stabilize-const_exposed_provenance, r=RalfJung

Stabilize `const_exposed_provenance` feature

This closes [tracking issue](#144538) and stabilises `fn with_exposed_provenance` and `fn with_exposed_provenance_mut` in const

Author: jhpratt

library/core/src/ptr/mod.rs

@@ -974,7 +974,7 @@ pub const fn dangling_mut<T>() -> *mut T {
 #[must_use]
 #[inline(always)]
 #[stable(feature = "exposed_provenance", since = "1.84.0")]
-#[rustc_const_unstable(feature = "const_exposed_provenance", issue = "144538")]
+#[rustc_const_stable(feature = "const_exposed_provenance", since = "CURRENT_RUSTC_VERSION")]
 #[cfg_attr(miri, track_caller)] // even without panics, this helps for Miri backtraces
 #[allow(fuzzy_provenance_casts)] // this *is* the explicit provenance API one should use instead
 pub const fn with_exposed_provenance<T>(addr: usize) -> *const T {
@@ -1015,7 +1015,7 @@ pub const fn with_exposed_provenance<T>(addr: usize) -> *const T {
 #[must_use]
 #[inline(always)]
 #[stable(feature = "exposed_provenance", since = "1.84.0")]
-#[rustc_const_unstable(feature = "const_exposed_provenance", issue = "144538")]
+#[rustc_const_stable(feature = "const_exposed_provenance", since = "CURRENT_RUSTC_VERSION")]
 #[cfg_attr(miri, track_caller)] // even without panics, this helps for Miri backtraces
 #[allow(fuzzy_provenance_casts)] // this *is* the explicit provenance API one should use instead
 pub const fn with_exposed_provenance_mut<T>(addr: usize) -> *mut T {