Auto merge of #90604 - mbartlett21:iterator-reexports, r=kennytm

Re-export some iterators from `core` in `std`

These iterators seem to have been forgotten to be re-exported from `std` (through `alloc`)

These are stable:

`core::slice::{SplitInclusive, SplitInclusiveMut}`

This one is still unstable:

`core::slice::EscapeAscii` (cc #77174)

library/alloc/src/lib.rs

@@ -104,6 +104,7 @@
 #![feature(extend_one)]
 #![feature(fmt_internals)]
 #![feature(fn_traits)]
+#![feature(inherent_ascii_escape)]
 #![feature(inplace_iteration)]
 #![feature(iter_advance_by)]
 #![feature(iter_zip)]

library/alloc/src/slice.rs

@@ -108,6 +108,8 @@ pub use core::slice::ArrayChunks;
 pub use core::slice::ArrayChunksMut;
 #[unstable(feature = "array_windows", issue = "75027")]
 pub use core::slice::ArrayWindows;
+#[unstable(feature = "inherent_ascii_escape", issue = "77174")]
+pub use core::slice::EscapeAscii;
 #[stable(feature = "slice_get_slice", since = "1.28.0")]
 pub use core::slice::SliceIndex;
 #[stable(feature = "from_ref", since = "1.28.0")]
@@ -130,6 +132,8 @@ pub use core::slice::{RChunks, RChunksExact, RChunksExactMut, RChunksMut};
 pub use core::slice::{RSplit, RSplitMut};
 #[stable(feature = "rust1", since = "1.0.0")]
 pub use core::slice::{RSplitN, RSplitNMut, SplitN, SplitNMut};
+#[stable(feature = "split_inclusive", since = "1.51.0")]
+pub use core::slice::{SplitInclusive, SplitInclusiveMut};
 
 ////////////////////////////////////////////////////////////////////////////////
 // Basic slice extension methods

library/alloc/src/str.rs

@@ -46,7 +46,7 @@ pub use core::str::pattern;
 pub use core::str::EncodeUtf16;
 #[stable(feature = "split_ascii_whitespace", since = "1.34.0")]
 pub use core::str::SplitAsciiWhitespace;
-#[stable(feature = "split_inclusive", since = "1.53.0")]
+#[stable(feature = "split_inclusive", since = "1.51.0")]
 pub use core::str::SplitInclusive;
 #[stable(feature = "rust1", since = "1.0.0")]
 pub use core::str::SplitWhitespace;