node-api: add __wasm32__ guards on async works

PR-URL: #46633
Refs: #33597
Refs: nodejs/node-addon-api#1283
Reviewed-By: Tobias Nießen <tniessen@tnie.de>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Michael Dawson <midawson@redhat.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

src/node_api.h

@@ -175,6 +175,7 @@ NAPI_EXTERN napi_status NAPI_CDECL napi_get_buffer_info(napi_env env,
                                                         void** data,
                                                         size_t* length);
 
+#ifndef __wasm32__
 // Methods to manage simple async operations
 NAPI_EXTERN napi_status NAPI_CDECL
 napi_create_async_work(napi_env env,
@@ -190,6 +191,7 @@ NAPI_EXTERN napi_status NAPI_CDECL napi_queue_async_work(napi_env env,
                                                          napi_async_work work);
 NAPI_EXTERN napi_status NAPI_CDECL napi_cancel_async_work(napi_env env,
                                                           napi_async_work work);
+#endif  // __wasm32__
 
 // version management
 NAPI_EXTERN napi_status NAPI_CDECL