message: Don't restore MemberInfo from RightPanel history when viewing a room
  As bringing up a specific MemberInfo when you view a room is freaky,
  even if it happened to be the last thing you were doing in that room.
  Fixes
diff: @@ -159,7 +159,7 @@ export default class RightPanelStore extends ReadyWatchingStore {
  if (!this.isPhaseValid(targetPhase)) return;
  if ((targetPhase === this.currentCardForRoom(rId)?.phase && !!cardState)) {
  - // Update state: set right panel with a new state but keep the phase (dont know it this is ever needed...)
  + // Update state: set right panel with a new state but keep the phase (don't know it this is ever needed...)
  const hist = this.byRoom[rId]?.history ?? [];
  hist[hist.length - 1].state = cardState;
  this.emitAndUpdateSettings();
  @@ -367,6 +367,7 @@ export default class RightPanelStore extends ReadyWatchingStore {
  }
  private onVerificationRequestUpdate = () => {
  + if (!this.currentCard?.state) return;
  const { member } = this.currentCard.state;
  if (!member) return;
  const pendingRequest = pendingVerificationRequestForUser(member);
  @@ -378,9 +379,25 @@ export default class RightPanelStore extends ReadyWatchingStore {
  private onRoomViewStoreUpdate = () => {
  // TODO: only use this function instead of the onDispatch (the whole onDispatch can get removed!) as soon groups are removed
  + const oldRoomId = this.viewedRoomId;
  this.viewedRoomId = RoomViewStore.getRoomId();
  // load values from byRoomCache with the viewedRoomId.
  this.loadCacheFromSettings();
  +
  + // if we're switching to a room, clear out any stale MemberInfo cards
  + // in order to fix https://github.com/vector-im/element-web/issues/21487
  + if (oldRoomId !== this.viewedRoomId) {
  + if (this.currentCard?.phase !== RightPanelPhases.EncryptionPanel) {
  + const panel = this.byRoom[this.viewedRoomId];
  + if (panel?.history) {
  + panel.history = panel.history.filter(
  + (card) => card.phase != RightPanelPhases.RoomMemberInfo &&
  + card.phase != RightPanelPhases.Room3pidMemberInfo,
  + );
  + }
  + }
  + }
  +
  // If the right panel stays open mode is used, and the panel was either
  // closed or never shown for that room, then force it open and display
  // the room member list.
  