Start the a live session, I used Burger Quizz, answer a question. On the
manager side, the current vote count for each choice should be visible
on top of each bar in the chart. That vote count is missing.
During the migration of chartjs from v2 to v4, the datalabel plugin was
updated from v0.7 to v2.2 in the same time. Using the new version of the
datalabel plugin, the plugin is not automatically loaded anymore, one
must explicitely loads it.
We also removed the datalabel plugin from the bundle to load it
explicitelly instead. The JS framework finds it cleaner this way.
Task-3537480
Reference-to: 7e3c1ecdb8 ([REF] *: Update Chart.js to V4.3)
Part-of: odoo/odoo#139204
Co-authored-by: Pierre Pulinckx <pipu@odoo.com>