Merged in task/dspace-cris-2023_02_x/DSC-1763 (pull request DSpace#1827)

[DSC-1763]

Approved-by: Andrea Barbasso

Author: Simone-Ramundi

src/app/shared/search/item-export/item-export-modal-launcher/item-export-modal-launcher.component.html

@@ -1,7 +1,7 @@
 <ng-template #template>
   <ng-container *ngIf="bulkExportLimit !== '0'">
 
-    <div class="add dropdown-container" display="dynamic" placement="bottom-right"
+    <div class="add" display="dynamic" placement="bottom-right"
          ngbDropdown >
       <button class="btn btn-md btn-outline-primary" id="dropdownSubmission" ngbDropdownToggle
               type="button"

src/app/shared/search/item-export/item-export-modal-launcher/item-export-modal-launcher.component.scss

@@ -1,7 +1,3 @@
 :host {
   display: none;
 }
-
-.dropdown-container {
-  z-index: 1025;
-}