Update WASI to cap-std 0.25 and windows-sys. (#4302)

This updates to rustix 0.35.6, and updates wasi-common to use cap-std 0.25 and
windows-sys (instead of winapi).

Changes include:

 - Better error code mappings on Windows.
 - Fixes undefined references to `utimensat` on Darwin.
 - Fixes undefined references to `preadv64` and `pwritev64` on Android.
 - Updates to io-lifetimes 0.7, which matches the io_safety API in Rust.
 - y2038 bug fixes for 32-bit platforms

crates/runtime/src/instance/allocator/pooling/unix.rs

@@ -10,15 +10,15 @@ fn decommit(addr: *mut u8, len: usize, protect: bool) -> Result<()> {
     // The new mapping will be to the CoW zero page, so this effectively
     // zeroes the pages.
     unsafe {
-        rustix::io::mmap_anonymous(
+        rustix::mm::mmap_anonymous(
             addr as _,
             len,
             if protect {
-                rustix::io::ProtFlags::empty()
+                rustix::mm::ProtFlags::empty()
             } else {
-                rustix::io::ProtFlags::READ | rustix::io::ProtFlags::WRITE
+                rustix::mm::ProtFlags::READ | rustix::mm::ProtFlags::WRITE
             },
-            rustix::io::MapFlags::PRIVATE | rustix::io::MapFlags::FIXED,
+            rustix::mm::MapFlags::PRIVATE | rustix::mm::MapFlags::FIXED,
         )
         .context("mmap failed to remap pages: {}")?;
     }