fix: Dont update a user's livechat status when its status is offline (#29589)

.changeset/thin-hats-jog.md

...app/livechat/server/business-hour/AbstractBusinessHour.ts

apps/meteor/app/livechat/server/business-hour/index.ts

apps/meteor/ee/server/startup/presence.ts

apps/meteor/server/models/raw/Users.js