Extends the v2.1.0 React-friendly snapshot pattern (originally on
SessionDataManager / RoomSessionManager) to two more session-state
holders the React client reads frequently:
- IgnoredUsersManager.getIgnoredUsersSnapshot(): ReadonlyArray<string>
- GroupInformationManager.getGroupBadgesSnapshot(): ReadonlyMap<number, string>
Both follow the same shape: lazy-frozen snapshot, cached until the
underlying state mutates, then invalidated and a dispatched event lets
the React client rebuild via useSyncExternalStore.
Two new NitroEventType members carry the invalidation signal:
- IGNORED_USERS_UPDATED — dispatched by IgnoredUsersManager whenever
the list changes (initial load, add, remove, queue-truncate case 2).
- GROUP_BADGES_UPDATED — dispatched by GroupInformationManager only
when the incoming HabboGroupBadges payload contains at least one
new or changed mapping (no-op refresh stays quiet).
This lets the user-info popup, profile page, friend/guild filtering,
and any other consumer share a single read through useSyncExternalStore
instead of each subscribing to the underlying message events
independently.
API additions are interface-respecting and backwards-compatible — the
existing `isIgnored(name)` / `getGroupBadge(groupId)` accessors stay
untouched.