fix: esm build source mapping url replacement (#6368)

Co-authored-by: Daniel Lu <dl1644@gmail.com>

Author: oedotme

scripts/buildEsm.js

@@ -2,7 +2,7 @@ const fs = require('fs');
 const glob = require('glob');
 
 let pkg = process.argv[process.argv.length - 1];
-let regex = /(.*)\.module\.js/g;
+let regex = /(.*)\.module\.js(?!.map)/g;
 if (fs.existsSync(`${pkg}/dist/module.js`)) {
   let js = fs.readFileSync(`${pkg}/dist/module.js`, 'utf8');
   js = js.replace(regex, '$1.mjs');