fix(snapshots): re-apply the 3 snapshot-consumer migrations with the use-between/useSyncExternalStore incompatibility resolved

Root cause of last session's "(intermediate value)() is undefined" at
ToolbarView.tsx:46:

  use-between 1.x ships its own React-dispatcher proxy (ownDispatcher
  in node_modules/use-between/release/index.esm.js:54-169) that
  re-implements only useState, useReducer, useEffect, useLayoutEffect,
  useCallback, useMemo, useRef and useImperativeHandle. It does NOT
  implement useSyncExternalStore. When the inner state function of
  useBetween(stateFn) calls useSyncExternalStore (directly or via
  useExternalSnapshot / useUserDataSnapshot), React resolves the
  dispatcher to use-between's proxy, finds .useSyncExternalStore
  missing, and calls undefined() — that's the exact production crash
  in Firefox. Chrome reports the same as
  "dispatcher.useSyncExternalStore is not a function".

Neither the vite alias (790ad2b) nor the defensive renderer-method
guards (c35a2d4) could fix it — both addressed downstream symptoms
(stale dist / missing manager methods) but the dispatcher is upstream
of both. That's why every retry kept reproducing the same error.

Fix is structural: snapshot hooks (useUserDataSnapshot,
useIsUserIgnored, etc.) MUST run outside any useBetween scope. Three
re-applied migrations:

- useSessionInfo: snapshot read moved into the outer wrapper. The
  inner useSessionInfoState (useBetween-shared) now contains only
  use-between-safe hooks: useState, useMessageEvent, plain actions.
  userFigure / userRespectRemaining / petRespectRemaining come from
  useUserDataSnapshot() OUTSIDE useBetween, so useSyncExternalStore
  installs against the real React dispatcher.

- useChatWidget.ownUserId: direct snapshot read. useChatWidget is
  exported as `useChatWidget = useChatWidgetState` (NOT wrapped in
  useBetween), so this hook never sat inside the broken scope — the
  precautionary rollback was unnecessary in retrospect. Gains
  session-change reactivity (e.g. reconnect under a different user id).

- AvatarInfoWidgetAvatarView Ignore/Unignore: useIsUserIgnored(name)
  read directly in the component body. Same reasoning as
  useChatWidget — never inside useBetween. The menu auto-flips
  Ignore <-> Unignore while the popup is open.

Added regression guard at src/hooks/session/useSessionSnapshots.test.tsx
with two cases: (1) useSyncExternalStore inside useBetween throws,
(2) useSyncExternalStore outside useBetween in the same render works.
Pins the constraint so future migrations cannot reintroduce the bad
shape silently.

Verification: yarn typecheck clean, yarn test 209/209 (207 baseline
+ 2 new regression cases), no consumer surface changes — every
destructured field (userFigure, userRespectRemaining, respectUser,
petRespectRemaining, respectPet, chatStyleId, updateChatStyleId) is
still returned with the same name and shape.

src/components/room/widgets/avatar-info/menu/AvatarInfoWidgetAvatarView.tsx

@@ -3,7 +3,7 @@ import { FC, useEffect, useMemo, useState } from 'react';
 import { FaChevronLeft, FaChevronRight } from 'react-icons/fa';
 import { AvatarInfoUser, DispatchUiEvent, GetOwnRoomObject, GetUserProfile, LocalizeText, MessengerFriend, ReportType, RoomWidgetUpdateChatInputContentEvent, SendMessageComposer } from '../../../../../api';
 import { Flex } from '../../../../../common';
-import { useFriends, useHelp, useRoom, useSessionInfo, useWiredTools } from '../../../../../hooks';
+import { useFriends, useHelp, useIsUserIgnored, useRoom, useSessionInfo, useWiredTools } from '../../../../../hooks';
 import { ContextMenuHeaderView } from '../../context-menu/ContextMenuHeaderView';
 import { ContextMenuListItemView } from '../../context-menu/ContextMenuListItemView';
 import { ContextMenuView } from '../../context-menu/ContextMenuView';
@@ -31,6 +31,11 @@ export const AvatarInfoWidgetAvatarView: FC<AvatarInfoWidgetAvatarViewProps> = p
     const { roomSession = null, isHandItemBlocked = false } = useRoom();
     const { userRespectRemaining = 0, respectUser = null } = useSessionInfo();
     const { openInspectionForUser, showInspectButton } = useWiredTools();
+    // Reactive: the menu auto-flips Ignore <-> Unignore if the state
+    // changes while the popup is open. Direct hook call (no useBetween
+    // scope here) so useSyncExternalStore installs against the real
+    // React dispatcher.
+    const isIgnored = useIsUserIgnored(avatarInfo.name);
 
     const isShowGiveRights = useMemo(() =>
     {
@@ -231,11 +236,11 @@ export const AvatarInfoWidgetAvatarView: FC<AvatarInfoWidgetAvatarViewProps> = p
                             { LocalizeText('infostand.link.relationship') }
                             <FaChevronRight className="right fa-icon" />
                         </ContextMenuListItemView> }
-                    { !avatarInfo.isIgnored &&
+                    { !isIgnored &&
                         <ContextMenuListItemView onClick={ event => processAction('ignore') }>
                             { LocalizeText('infostand.button.ignore') }
                         </ContextMenuListItemView> }
-                    { avatarInfo.isIgnored &&
+                    { isIgnored &&
                         <ContextMenuListItemView onClick={ event => processAction('unignore') }>
                             { LocalizeText('infostand.button.unignore') }
                         </ContextMenuListItemView> }