Fix: Raw Titles for Content Picker

[Antonio-Laguna]

Description of the Change

Ensures that titles are stripped of HTML before being rendered. I chose this approach vs using dangerouslySetInnerHTML because you can pass components to take care of rendering some things, and I thought it made sense to have this be a global fix. Furthermore, that extra HTML might make sense in a rendering scenario, but probably not for a content picker.

Closes #384

How to test the Change

Add a filter to plugin.php under example such as this one:

add_filter( 'the_title', function ( $title ) {
	return '<span>' . $title . '</span>';
} );

Launch the dev environment and insert Content Picker into the default post.

Before

After

Changelog Entry

Fixed – Stripped HTML from post titles before rendering in the Content Picker to prevent unintended markup and ensure consistent display.

Checklist:

• I agree to follow this project's Code of Conduct.
• I have updated the documentation accordingly.
• I have added Critical Flows, Test Cases, and/or End-to-End Tests to cover my change.
• All new and existing tests pass.

[fabiankaegy]

I'm about to merge #373 which I think also solves this problem