Merge pull request #4237 from DSpace/backport-4167-to-dspace-7_x

[Port dspace-7_x] Fix unable to remove data from a submission form field of type "name"

Author: tdonohue

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

@@ -403,7 +403,7 @@ export class SectionFormOperationsService {
             );
           }
         }
-      } else if (!value.hasValue()) {
+      } else if (isNotEmpty(value) && !value.hasValue()) {
         // New value is empty, so dispatch a remove operation
         if (this.getArrayIndexFromEvent(event) === 0) {
           this.operationsBuilder.remove(pathCombiner.getPath(segmentedPath));