Fix EventListSummary when RR rendering is disabled

Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>

res/css/views/rooms/_EventTile.scss

@@ -120,7 +120,9 @@ limitations under the License.
     line-height: 22px;
 }
 
-.mx_RoomView_timeline_rr_enabled {
+.mx_RoomView_timeline_rr_enabled,
+// on ELS we need the margin to allow interaction with the expand/collapse button which is normally in the RR gutter
+.mx_EventListSummary {
     .mx_EventTile_line, .mx_EventTile_reply {
         /* ideally should be 100px, but 95px gives us a max thumbnail size of 800x600, which is nice */
         margin-right: 110px;