Move the beta pill to the right side and display the pill on video room only (#8873)

res/css/views/rooms/_RoomPreviewCard.scss

@@ -74,6 +74,7 @@ limitations under the License.
 
         // XXX Remove this when video rooms leave beta
         .mx_BetaCard_betaPill {
+            margin-inline-start: auto;
             align-self: start;
         }
     }

src/components/views/rooms/RoomPreviewCard.tsx

@@ -102,7 +102,10 @@ const RoomPreviewCard: FC<IProps> = ({ room, onJoinButtonClicked, onRejectButton
                         { inviteSender }
                     </div> : null }
                 </div>
-                <BetaPill onClick={viewLabs} tooltipTitle={_t("Video rooms are a beta feature")} />
+                { room.isElementVideoRoom()
+                    ? <BetaPill onClick={viewLabs} tooltipTitle={_t("Video rooms are a beta feature")} />
+                    : null
+                }
             </div>;
         }