test(omni): Improve test coverage for "Current chats" panel (#29146)

apps/meteor/tests/data/api-data.js

apps/meteor/tests/data/livechat/department.ts

apps/meteor/tests/data/livechat/rooms.ts

apps/meteor/tests/data/permissions.helper.ts

apps/meteor/tests/data/uploads.helper.ts

apps/meteor/tests/data/user.ts

apps/meteor/tests/end-to-end/api/00-miscellaneous.js

apps/meteor/tests/end-to-end/api/01-users.js

apps/meteor/tests/end-to-end/api/02-channels.js

apps/meteor/tests/end-to-end/api/03-groups.js

apps/meteor/tests/end-to-end/api/04-direct-message.js

apps/meteor/tests/end-to-end/api/10-subscriptions.js

apps/meteor/tests/end-to-end/api/20-licenses.js

apps/meteor/tests/end-to-end/api/27-presence.ts

apps/meteor/tests/end-to-end/api/import.spec.ts

apps/meteor/tests/end-to-end/api/livechat/00-rooms.ts

apps/meteor/tests/end-to-end/api/livechat/01-agents.ts

apps/meteor/tests/end-to-end/api/livechat/09-visitors.ts

apps/meteor/tests/end-to-end/api/livechat/12-priorites.ts

.../meteor/tests/end-to-end/api/livechat/17-dashboards-ee.ts