This fixes the module output.

I still think the session data should be removed in the cypress tests when the user is deleted

out of scope of this PR

I have tested this item ✅ successfully on 10a9e3b

Before applying this patch tested on Windows 11 (as the deprecation message was however not reproducable on JBT):

npx cypress run --spec "tests\System\integration\install\Installation.cy.js,tests\System\integration\site\components\com_users\Registration.cy.js,tests\System\integration\site\components\com_users\Login.cy.js"

admin's Home Dashboard shows on 'Logged-in Users' the message

Deprecated: htmlspecialchars(): Passing null to parameter #1 ($string) of type string is deprecated in C:\laragon\www\j53\administrator\modules\mod_logged\tmpl\default.php on line 37

Clicking on "Log out" for the user with the Deprecated message produces PHP error log:

[01-Mar-2025 17:34:35 UTC] PHP Deprecated:  htmlspecialchars(): Passing null to parameter #1 ($string) of type string is deprecated in C:\laragon\www\j53\administrator\modules\mod_logged\tmpl\default.php on line 37

After installing this PR with git (as Joomla! Patch Tester is not usable with database installation) and running the test again:

git fetch --depth 1 origin pull/45003/head:pr-45003
git checkout pr-45003
npx cypress run --spec "tests\System\integration\install\Installation.cy.js,tests\System\integration\site\components\com_users\Registration.cy.js,tests\System\integration\site\components\com_users\Login.cy.js"

The admin's Home Dashboard deprecation message on 'Logged-in Users' is gone and no entries in PHP error log 👍