[Cockpit 389ds plugin] base64 decode bug

[cold01water]

Issue Description
There is a bug in the base64 decoding process.

Package Version and Platform:

• Platform: ALmalinux9
• Package and version: master branch
• Browser Edge

Steps to Reproduce

1. Add attributes containing unicode
2. When I view the entry, no base64 decoding is done

Expected results
Decoded content should be displayed

Additional context
utils.jsx result should be declared.

export function b64DecodeUnicode (str) {
  // Going backwards: from bytestream, to percent-encoding, to original string.
  try {
      // !!!! put let here !!!!!
      result = decodeURIComponent(atob(str).split('').map(c => {
          return '%' + ('00' + c.charCodeAt(0).toString(16)).slice(-2);
      }).join(''));
      return result;
  } catch(e) {
      console.debug("b64DecodeUnicode failed to decode: ", str);
      return str;
  }
}