Feature: #19157 - Add option to exclude all hidden records in EXT:impexp

See forge#19157


The export configuration of EXT:impexp has been extended to allow to completely deactivate exporting of hidden/deactivated records. This behaviour can be controlled via a new option which is checked by default.

Furthermore, if the inclusion of hidden records is activated (which is now an explicit choice), then an additional button is shown, allowing users to preselect all hidden records for manual exclusion.