Issue #3279758: Support Drupal 10 and update all use of deprecation in the Block Class module

Hoi Sing Edison Wongrequested to merge
issue/block_class-3279758:3279758-support-drupal-10 into 2.0.x

https://www.drupal.org/project/block_class/issues/3279758

Suggested deprecated code clean-up.

Edited by David Suissa

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