Breaking changes (datalabels) upgrading from 5.1.0 to 5.1.x

Problem/Motivation

It seems as though the change in the 5.1.1 and above versions of charts_chartjs has a breaking change that adds the chartjs-plugin-datalabels plugin as an npm-asset, whereas with version 5.1.0 one had to manually add the chartjs-plugin-datalabels plugin as a separate library.

When using the standard `composer require 'drupal/charts:^5.1'` with a `composer update` it will break the charts if you are previously using charts 5.1.0 and a separate manual install of chartjs-plugin-datalabels.

Proposed resolution

Ideally there would be clear instructions on how to upgrade charts from 5.1.0 to a newer 5.1.x as there appears to be some breaking changes, especially if you were using the chartjs-plugin-datalabels plugin with version 5.1.0.