Pull Request resolves # .

• I read the Generative AI policy and my contribution is either not created with the help of AI or is compatible with the policy and GNU/GPL 2 or later.

Summary of Changes

The MessagesModel in com_postinstall still uses depcreated code like Factory::getCache to create cache controller. This PR updates code in that model to use the injected cache controller factory to create cache controller instead.

Testing Instructions

• Use Joomla 6.2
• Go to System -> Global Configuration, System tab, set System Cache to one of the two ON options
• Access to System -> Installation Messages you should see list of messages there
• Try to Hide, Archive, Hide All Messages, Reset Messages... on the screen and make sure it is still working as expected.

Actual result BEFORE applying this Pull Request

Works, but use deprecated code

Expected result AFTER applying this Pull Request

Works, without using deprecated code

Link to documentations

Please select:

• Documentation link for guide.joomla.org:

• No documentation changes for guide.joomla.org needed

• Pull Request link for manual.joomla.org:

• No documentation changes for manual.joomla.org needed