Fix: add missing ngbdropdown for management lists on mobile

src-ui/src/app/components/admin/trash/trash.component.scss

@@ -0,0 +1,4 @@
+// hide caret on mobile dropdown
+.d-block.d-sm-none .dropdown-toggle::after {
+  display: none;
+}

src-ui/src/app/components/admin/trash/trash.component.ts

@@ -1,7 +1,11 @@
 import { Component, OnDestroy } from '@angular/core'
 import { FormsModule, ReactiveFormsModule } from '@angular/forms'
 import { Router } from '@angular/router'
-import { NgbModal, NgbPaginationModule } from '@ng-bootstrap/ng-bootstrap'
+import {
+  NgbDropdownModule,
+  NgbModal,
+  NgbPaginationModule,
+} from '@ng-bootstrap/ng-bootstrap'
 import { NgxBootstrapIconsModule } from 'ngx-bootstrap-icons'
 import { delay, takeUntil, tap } from 'rxjs'
 import { Document } from 'src/app/data/document'
@@ -23,6 +27,7 @@ import { LoadingComponentWithPermissions } from '../../loading-component/loading
     PreviewPopupComponent,
     FormsModule,
     ReactiveFormsModule,
+    NgbDropdownModule,
     NgbPaginationModule,
     NgxBootstrapIconsModule,
   ],