internal/{cm,wasi}: regenerate WASI 0.2 bindings with wasm-tools-go v0.3.0

src/internal/cm/hostlayout_go123.go

@@ -0,0 +1,9 @@
+//go:build go1.23
+
+package cm
+
+import "structs"
+
+// HostLayout marks a struct as using host memory layout.
+// See [structs.HostLayout] in Go 1.23 or later.
+type HostLayout = structs.HostLayout