Latest version not replacing url on resolve of image uploader

Start with the image uploader callback shown in the issue and compare the earlier success/failure handler with the newer Promise-based handler. Verify how the resolved URL is consumed by the TinyMCE Angular integration, using the logged response URL and the hard-coded resolved URL as test cases. Done means the uploaded image URL is placed in the editor after the Promise resolves.

the below function was working fine

function (blobInfo, success, failure) {
const xhr = new XMLHttpRequest();
xhr.open('POST', ${environment.SITE_BASE_URL}filemanager/filemanager/upload.php);
xhr.onload = function () {
if (xhr.status !== 200) {
failure('HTTP Error: ' + xhr.status);
return;
}
const json = JSON.parse(xhr.responseText);
if (!json?.files[0]?.url) {
failure('Invalid JSON: ' + xhr.responseText);
return;
}
success(json?.files[0]?.url);
};
xhr.onerror = function () {
failure('Image upload failed due to a XHR error');
};

    const formData = new FormData();
    formData.append('files[]', blobInfo.blob(), blobInfo.filename());
    formData.append('fldr', '');
    xhr.withCredentials = true;
    xhr.send(formData);
  }

In latest version I replace the above with below

(blobInfo, progress) => new Promise((resolve, reject) => {
const xhr = new XMLHttpRequest();
xhr.open('POST', ${environment.SITE_BASE_URL}filemanager/filemanager/upload.php);

      xhr.onload = () => {
        if (xhr.status !== 200) {
          reject('HTTP Error: ' + xhr.status);
          return;
        }

        const json = JSON.parse(xhr.responseText);
        console.log(json);
        if (!json?.files[0]?.url) {
          reject('Invalid JSON: ' + xhr.responseText);
          return;
        }

        console.log(json?.files[0]?.url);
        resolve('https://apiss.kualiteestaging.com/files/mceclip1.png');
      };

      xhr.onerror = (error) => {
        console.log(error);
        reject('Image upload failed due to a XHR Transport error. Code: ' + xhr.status);
      };

      const formData = new FormData();
      formData.append('fldr', '');
      formData.append('files[]', blobInfo.blob(), blobInfo.filename());

      xhr.send(formData);
    })

but on resolving the url is not getting placed but it was happening with first version. Is I am doing something wrong or missing or its abug