[deprecation/fix] rollback to old class_deprecation being a class behavior

It breaks CW because CW was using class_deprecated in a isinstance to select
the good views to uses.
6 jobs for topic/default/rollback-class_deprecation-branch-default in 4 minutes and 23 seconds (queued for 17 seconds)
Status Name Job ID Coverage
  Tests
passed black #34124

00:02:07

passed check-manifest #34123

00:02:09

passed flake8 #34122

00:01:32

passed mypy #34125

00:03:47

passed py3 #34121

00:00:58

 
  After Tests
passed trigger-other-pipelines #34126

00:00:33