message: Also nuke profile on room profile update
diff: @@ -212,6 +212,7 @@ export class MatrixEventProcessor {
  const membership = event.content!.membership;
  if (membership === "join") {
  this.mxUserProfileCache.delete(`${event.room_id}:${event.sender}`);
  + this.mxUserProfileCache.delete(`${event.sender}`);
  if (event.content!.displayname) {
  this.mxUserProfileCache.set(`${event.room_id}:${event.sender}`, {
  avatar_url: event.content!.avatar_url,
  