[DSC-2876] fix: handle string authority values in section-form-operations service

Author: atarix83

src/app/submission/sections/form/section-form-operations.service.ts

@@ -250,7 +250,11 @@ export class SectionFormOperationsService {
       if ((event.model as DsDynamicInputModel).hasAuthority) {
         if (Array.isArray(value)) {
           value.forEach((authority, index) => {
-            authority = Object.assign(new VocabularyEntry(), authority, { language });
+            if (typeof authority === 'string') {
+              authority = Object.assign(new VocabularyEntry(), { value: authority, language });
+            } else {
+              authority = Object.assign(new VocabularyEntry(), authority, { language });
+            }
             value[index] = authority;
           });
           fieldValue = value;