Rollup merge of rust-lang#145331 - theemathas:std-prelude-2024, r=tgross35

Make std use the edition 2024 prelude

This seem to have been overlooked in <rust-lang#138162>

Author: Zalathar

library/std/src/lib.rs

@@ -436,7 +436,7 @@ pub mod prelude;
 // to import the prelude implicitly when building crates that depend on std.
 #[prelude_import]
 #[allow(unused)]
-use prelude::rust_2021::*;
+use prelude::rust_2024::*;
 
 // Access to Bencher, etc.
 #[cfg(test)]