Bump napi: imports-lane parity fixes (ECO-416)

[Arshia001]

Submodule bump only — pulls wasmerio/napi#46 into the wasmer CLI's N-API runtime:
CreateBufferObject-via-prototype, napi_create_string_utf8/latin1 NUL fix, and structuredClone empty-transfer-list fix.

Verified via the edgejs v8-wasix node suite (1662 pass / 0 failures). Stacked on the ECO-415 branch; not independently mergeable yet.

🤖 Generated with Claude Code

[Copilot]

Pull request overview

This PR updates the lib/napi git submodule pointer so the wasmer CLI’s N-API runtime picks up the fixes from wasmerio/napi#46 (imports-lane parity fixes called out in ECO-416).

Changes:

• Bump lib/napi submodule from d8940cae… to 8224dc35… (head of wasmerio/napi#46).
• Pull in upstream fixes mentioned in the PR description (buffers via prototype, string NUL handling, structuredClone empty transfer list handling).

[Arshia001]

Superseded by #6877, which replaces this whole stack with a single PR.

Nine of the ten PRs here were pure lib/napi submodule bumps; #6877's napi pin is a descendant of every one of them, so it subsumes them all. #6822 was the only one carrying code — its SharedMemory::vm_shared_memory() accessor is reworked in #6877 into SharedMemory::grow/data_ptr/style, which keep the VM types encapsulated, avoid the unwrap_sys_ref() panic on non-sys backends, and fix the cargo doc --no-default-features --features v8 failure Copilot flagged. Its Cargo.lock entries are carried over too.

Not abandoned work — same changes, one reviewable PR.