_drupal_flush_css_js() is deprecated and replaced by \Drupal::service('asset.query_string')->reset()

[github-actions]

https://www.drupal.org/node/3358337

Introduced in branch/version: 10.2.x / 10.2.0

_drupal_flush_css_js() is deprecated and replaced by the 'asset.query_string' service which provides \Drupal\Core\Asset\AssetQueryStringInterface::reset()

Before
_drupal_flush_css_js();

After

<?php
\Drupal::service('asset.query_string')->reset();
?>

Or use dependency injection and call \Drupal\Core\Asset\AssetQueryStringInterface::reset()