update the experimental sharedarraybuffer availability

node_api_is_sharedarraybuffer is added in v24.9.0
https://nodejs.org/api/n-api.html#node-api-is-sharedarraybuffer

Signed-off-by: Balakrishna Avulapati <ba@bavulapati.com>

Author: bavulapati

implementors/node/features.js

@@ -1,8 +1,14 @@
 // Declares which experimental Node-API features this runtime supports.
 // Each key corresponds to a NODE_API_EXPERIMENTAL_HAS_* compile-time macro.
 // Other implementors should set unsupported features to false or omit them.
+
+const [major, minor] = process.version.slice(1).split('.').map(Number);
+
 globalThis.experimentalFeatures = {
-  sharedArrayBuffer: true,
+  // node_api_is_sharedarraybuffer and node_api_create_sharedarraybuffer were
+  // added in Node.js v24.9.0. Earlier versions do not export these symbols,
+  // causing addons that reference them to fail at dlopen time.
+  sharedArrayBuffer: major >= 25 || (major === 24 && minor >= 9),
   createObjectWithProperties: true,
   setPrototype: true,
   postFinalizer: true,