Add more from the std

crates/std/src/thread/spawnhook.rs

@@ -1,7 +1,7 @@
 use super::thread::Thread;
 use crate::cell::Cell;
 use crate::iter;
-use alloc_crate::sync::Arc;
+use crate::sync::Arc;
 
 crate::thread_local! {
     /// A thread local linked list of spawn hooks.