Fix animation

Signed-off-by: marinofaggiana <ios@nextcloud.com>

iOSClient/Main/Collection Common/NCGridCell.swift

@@ -129,6 +129,10 @@ class NCGridCell: UICollectionViewCell, UIGestureRecognizerDelegate, NCCellProto
         accessibilityValue = nil
     }
 
+    override func snapshotView(afterScreenUpdates afterUpdates: Bool) -> UIView? {
+        return nil
+    }
+
     @IBAction func touchUpInsideMore(_ sender: Any) {
         delegate?.tapMoreGridItem(with: objectId, namedButtonMore: namedButtonMore, image: imageItem.image, sender: sender)
     }

iOSClient/Main/Collection Common/NCListCell.swift

@@ -151,6 +151,10 @@ class NCListCell: UICollectionViewCell, UIGestureRecognizerDelegate, NCCellProto
         accessibilityValue = nil
     }
 
+    override func snapshotView(afterScreenUpdates afterUpdates: Bool) -> UIView? {
+        return nil
+    }
+    
     @IBAction func touchUpInsideShare(_ sender: Any) {
         delegate?.tapShareListItem(with: objectId, sender: sender)
     }