Fix right margin for events on IRC layout

Fixes vector-im/element-web#18354

res/css/views/rooms/_EventTile.scss

@@ -310,14 +310,12 @@ $hover-select-border: 4px;
 }
 
 .mx_RoomView_timeline_rr_enabled {
-
-    .mx_EventTile:not([data-layout=bubble]) {
+    .mx_EventTile[data-layout=group] {
         .mx_EventTile_line {
             /* ideally should be 100px, but 95px gives us a max thumbnail size of 800x600, which is nice */
             margin-right: 110px;
         }
     }
-
     // on ELS we need the margin to allow interaction with the expand/collapse button which is normally in the RR gutter
 }