fix(phpstan): php8.4 null deprecated

.phive/phars.xml

phpstan-baseline.neon

src/QUI/ERP/Accounting/Article.php

src/QUI/ERP/Accounting/ArticleListUnique.php

src/QUI/ERP/Accounting/Calc.php

src/QUI/ERP/Accounting/CalculationValue.php

src/QUI/ERP/Accounting/CalculationVatValue.php

src/QUI/ERP/Address.php

src/QUI/ERP/Api/NumberRangeInterface.php

src/QUI/ERP/Dashboard/ErpDashboard.php

src/QUI/ERP/Defaults.php

src/QUI/ERP/ErpCopyInterface.php

src/QUI/ERP/ErpEntityInterface.php

src/QUI/ERP/Money/Price.php

src/QUI/ERP/Output/Output.php

src/QUI/ERP/Output/OutputProviderInterface.php

src/QUI/ERP/Output/OutputTemplate.php

src/QUI/ERP/Output/OutputTemplateProviderInterface.php

src/QUI/ERP/User.php

src/QUI/ERP/Utils/Sites.php