\Drupal\Core\Datetime\Element\Datelist::processDatelist() does not use trusted callbacks - #date_date_callbacks only partially converted to TrustedCallbackInterface in 9.3.x

Problem/Motivation

#3213572: #date_time_callbacks and #date_date_callbacks bypass the TrustedCallbackInterface protections converted \Drupal\Core\Datetime\Element\Datetime to use the trusted callback system. However \Drupal\Core\Datetime\Element\Datelist also uses #date_date_callbacks so now we're at a point where we are inconsistent.

Proposed resolution

Fix \Drupal\Core\Datetime\Element\Datelist to use trusted callbacks.

Remaining tasks

User interface changes

API changes

Data model changes

Release notes snippet