Fix: check original file for rotate

src-ui/src/app/components/document-detail/document-detail.component.html

@@ -57,7 +57,7 @@
         <i-bs width="1em" height="1em" name="scissors"></i-bs>&nbsp;<span i18n>Split</span>
       </button>
 
-      <button ngbDropdownItem (click)="rotateDocument()" [disabled]="!userIsOwner || contentRenderType !== ContentRenderType.PDF">
+      <button ngbDropdownItem (click)="rotateDocument()" [disabled]="!userIsOwner || metadata?.original_mime_type !== 'application/pdf'">
         <i-bs name="arrow-clockwise"></i-bs>&nbsp;<ng-container i18n>Rotate</ng-container>
       </button>
     </div>