Uncaught TypeError: $(...).once is not a function with Drupal 10

Thanks for the patch! Confirming that this did indeed solve the issue for me. Additionally, this fixed my primary issue, which was that the contextual menu containing the "Delete" option was not showing up when right-clicking items in the Foldershare list — likely due to the aforementioned .once errors.

This issue was resolved in release 8.x-1.8.