OZG-3260 fix file mapper

...angsadapter/common/formdata/FormSolutionsTestFactory.java

...ingangsadapter/formsolutions/FormSolutionsFileMapper.java

...angsadapter/formsolutions/FormSolutionsRequestMapper.java

...adapter/formsolutions/FormSolutionsRequestMapperTest.java

...eingangsadapter/formsolutions/SendFormEndpointITCase.java

...p/eingangsadapter/intelliform/SemantikFormDataMapper.java

...ngangsadapter/intelliform/SemantikFormDataMapperTest.java

.../de/itvsh/kop/eingangsadapter/semantik/FormDataUtils.java

...gangsadapter/semantik/enginebased/AbstractFileMapper.java

...gangsadapter/semantik/enginebased/AfmFilesMapperTest.java

...sadapter/semantik/enginebased/AttachmentsTestFactory.java

...ik/enginebased/FormSolutionsEngineBasedAdapterITCase.java

...er/semantik/enginebased/FormSolutionsFilesMapperTest.java