fix(core): Ensure correct ArrayBuffer return, fix fetch body typing, reorganize node-only tests, and bump tsbuild devDependency

ts/00_commitinfo_data.ts

@@ -3,6 +3,6 @@
  */
 export const commitinfo = {
   name: '@push.rocks/smartrequest',
-  version: '4.3.7',
+  version: '4.3.8',
   description: 'A module for modern HTTP/HTTPS requests with support for form data, file uploads, JSON, binary data, streams, and more.'
 }