Fix annoying asset editor.

src/Squidex/app/features/content/shared/assets-editor.component.html

@@ -1,6 +1,6 @@
 <div class="assets-container" [class.disabled]="isDisabled">
     <div class="row">
-        <div class="col-4 drop-area-container" *ngIf="!isDisabled">
+        <div class="col-4 drop-area-container">
             <div class="drop-area" dnd-droppable (onDropSuccess)="onAssetDropped($event.dragData)" [allowDrop]="canDrop()" (sqxFileDrop)="addFiles($event)" routerLink="assets">
                 Drop files or assets here to add them.
             </div>

src/Squidex/app/features/content/shared/assets-editor.component.ts

@@ -97,7 +97,7 @@ export class AssetsEditorComponent implements ControlValueAccessor, OnDestroy, O
         const component = this;
 
         return (dragData: any) => {
-            return dragData instanceof AssetDto && !component.oldAssets.find(a => a.id === dragData.id);
+            return !component.isDisabled && dragData instanceof AssetDto && !component.oldAssets.find(a => a.id === dragData.id);
         };
     }