Extension does not work anymore with GitLab 18.2

The UI element does not appear and running logReviewProgress() raises the error

Uncaught (in promise) TypeError: prepareRawDiffFile is not a function
    at userscript.html?name=GitLab-Merge-Request-Review-Progress.user.js&id=5bfc9109-6ce9-488a-878e-b5170a58b0be:134:17
    at Array.forEach (<anonymous>)
    at fetchDiffBatches (userscript.html?name=GitLab-Merge-Request-Review-Progress.user.js&id=5bfc9109-6ce9-488a-878e-b5170a58b0be:133:34)
    at async userscript.html?name=GitLab-Merge-Request-Review-Progress.user.js&id=5bfc9109-6ce9-488a-878e-b5170a58b0be:217:17
    at async logReviewProgress (userscript.html?name=GitLab-Merge-Request-Review-Progress.user.js&id=5bfc9109-6ce9-488a-878e-b5170a58b0be:315:32)

To upload designs, you'll need to enable LFS and have an admin enable hashed storage. More information