refactor(core): log Docusaurus & Node version before exiting (#7781)

Author: Josh-Cena

packages/docusaurus/bin/docusaurus.mjs

@@ -217,5 +217,7 @@ cli.parse(process.argv);
 
 process.on('unhandledRejection', (err) => {
   logger.error(err instanceof Error ? err.stack : err);
+  logger.info`Docusaurus version: number=${DOCUSAURUS_VERSION}
+Node version: number=${process.version}`;
   process.exit(1);
 });