message: Prevent duplicate avatars in Event List Summaries
diff: @@ -14,7 +14,8 @@ See the License for the specific language governing permissions and
  limitations under the License.
  */
  -import React, { ReactNode, useEffect } from 'react';
  +import React, { ReactNode, useEffect } from "react";
  +import { uniqBy } from "lodash";
  import { MatrixEvent } from "matrix-js-sdk/src/models/event";
  import { RoomMember } from "matrix-js-sdk/src/models/room-member";
  @@ -80,7 +81,8 @@ const EventListSummary: React.FC<IProps> = ({
  { children }
  </React.Fragment>;
  } else {
  - const avatars = summaryMembers.map((m) => <MemberAvatar key={m.userId} member={m} width={14} height={14} />);
  + const uniqueMembers = uniqBy(summaryMembers, member => member.getMxcAvatarUrl());
  + const avatars = uniqueMembers.map((m) => <MemberAvatar key={m.userId} member={m} width={14} height={14} />);
  body = (
  <div className="mx_EventTile_line">
  <div className="mx_EventTile_info">
  