Fix commit edit history

Fix element-hq/element-web#18742

Author: Dariusz Niemczyk

res/css/structures/_ScrollPanel.scss

@@ -15,8 +15,6 @@ limitations under the License.
 */
 
 .mx_ScrollPanel {
-    contain: strict;
-
     .mx_RoomView_MessageList {
         position: relative;
         display: flex;