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

Problem/Motivation

There is a js problem with displaying Mediaflow form on Media creation page (/media/add/mediaflow) on Drupal 10.

jQuery.once() has been removed from Drupal10, https://www.drupal.org/node/3158256 so the script needs to be adjusted accordingly.

Steps to reproduce

Install the module, set up credentials on the config form and try to add new Mediaflow item.

Proposed resolution

Replace usage of `jQuery.once` with `core/once`.

Remaining tasks

User interface changes

API changes

Data model changes