Steps to reproduce the issue

Using Extensions: update (.../administrator/index.php?option=com_installer&view=update) attempt to update a plugin which relies up a third party component.

The plugin must be enabled.
Note: Error does not occur if the plugin is disabled.

The error occurs because the preparePreUpdate() function loads the plugin. This invokes the plugin constructor. In the example encountered the plugin assumes it has been loaded by that third party component, but of course in this case it is being loaded by com_installer.

Expected result

Sensible error message explaining where the problem is.

Actual result

Class XXXXXXXXXXXX not found error message.
Leaves updater wondering what its about.

System information (as much as possible)

PHP 8.2

Additional comments