The 'system.css_js_query_string' state is deprecated in drupal:10.2.0

Problem/Motivation

In Drupal 11, the JS assets used by H5P try to add a cache busting URL parameter, but the deprecated method always returns a '0', which results in URL paths like /modules/contrib/h5p/vendor/h5p/h5p-core/js/h5p-event-dispatcher.js?0=. Since the cache bust param is always the same, it won't actually bust the cache.

Steps to reproduce

• Open your browsers developer tools window
• Visit the network tab
• View any node with an H5P field.
• In the dev tools network tab, you will see all the H5P JS / CSS files have the ?0= parameter appended.

Proposed resolution

Replace all uses of Drupal::state()->get('system.css_js_query_string', '0') with calls to \Drupal::service('asset.query_string')->get()

Remaining tasks

Update the following lines:

• src/Form/H5PContentUpgradeForm.php - line 66
• src/H5PDrupal/H5PDrupal.php - line 139
• src/H5PDrupal/H5PDrupal.php - line 174
• modules/h5peditor/src/H5PEditor/H5PEditorUtilities.php - line 122

User interface changes

None

API changes

None

Data model changes

None