Fixed php 8.2 conventions

include/Webservices/VtigerCRMObjectMeta.php

include/fields/DateTimeField.php

include/utils/UserInfoUtil.php

include/utils/VtlibUtils.php

modules/Calendar/Activity.php

modules/Calendar/models/Module.php

modules/Migration/views/Index.php

modules/Reports/models/Folder.php

modules/Settings/Workflows/models/Record.php

modules/Users/CreateUserPrivilegeFile.php

modules/Users/views/UserSetup.php

vtlib/Vtiger/Deprecated.php