Limit scope to review comment: keep channel_restored cache-refresh-only

[Copilot]

This addresses only the linked review comment requesting removal of unintended channel_restored behavior changes. The intended outcome is that channel_restored does not execute channel-created handling logic.

• Scope aligned to review comment

  • Kept handling for model.WebsocketEventChannelRestored as cache-refresh-only.
  • Ensured no mapping to handleWsActionChannelCreated is introduced as part of this fix scope.

• Behavior preserved

  • channel_restored continues to run only the cache presence/update check path.

case model.WebsocketEventChannelRestored:
    // check if we have the users/channels in our cache. If not update
    m.checkWsActionMessage(message.Raw, updateChannelsThrottle)