Update konradmichalik/phpstan-typo3-preset to ^0.4 and run new checks

[konradmichalik]

Summary

konradmichalik/phpstan-typo3-preset was released in 0.4.0, adding ergebnis/phpstan-rules (declareStrictTypes, finalInAbstractClass) and widening the tomasvotruba/cognitive-complexity constraint. Tests/CGL/composer.json currently pins the preset below ^0.4, which does not resolve 0.4.0 since caret ranges on 0.x versions only allow patch updates.

Tasks

• Bump konradmichalik/phpstan-typo3-preset in Tests/CGL/composer.json to ^0.4
• Run composer update in Tests/CGL (no lock file there, so a fresh install picks up the new version)
• Run composer sca:php and fix or baseline any new findings, in particular missing declare(strict_types=1) flagged by ergebnis.declareStrictTypes