fix: use explicit nullable type for PHP 8.4 compatibility for cs_seo 8.x (TYPO3 v12)

[konradmichalik]

Summary

• Fix implicit nullable parameter in AbstractUrlService::__construct() to resolve PHP 8.4 deprecation warning

Details

PHP 8.4 deprecates implicitly nullable parameter types. The $typoScriptFrontendController parameter used Type $param = null instead of ?Type $param = null.

  Deprecated: Clickstorm\CsSeo\Service\AbstractUrlService::__construct():
  Implicitly marking parameter $typoScriptFrontendController as nullable
  is deprecated, the explicit nullable type must be used instead

[mhirdes]

Thanks