CVE-2023-28445: Deno improperly handles resizable ArrayBuffer

The vulnerability stems from improper handling of resizable ArrayBuffers in async contexts. The core issue was in serde_v8's V8Slice implementation, which provided direct buffer access without revalidating the BackingStore's length after potential resizing. The patches in denoland/deno#18452 explicitly modified these methods to check the current buffer length and truncate slices when necessary. This indicates the original implementations of V8Slice::open and V8Slice::open_mut were vulnerable to OOB access when buffers were resized during async operations, as they relied on initial length values rather than current state.