feat(sci): Restrict livechat visitors to their source type scope (#33569)

.changeset/fuzzy-pans-share.md

apps/meteor/app/apps/server/bridges/livechat.ts

apps/meteor/app/apps/server/converters/visitors.js

apps/meteor/app/livechat/imports/server/rest/sms.ts

apps/meteor/app/livechat/imports/server/rest/upload.ts

apps/meteor/app/livechat/server/api/lib/livechat.ts

apps/meteor/app/livechat/server/api/v1/message.ts

apps/meteor/app/livechat/server/lib/LivechatTyped.ts

...meteor/app/livechat/server/methods/sendMessageLivechat.ts

apps/meteor/app/livechat/server/sendMessageBySMS.ts

apps/meteor/ee/server/apps/communication/uikit.ts

.../meteor/server/features/EmailInbox/EmailInbox_Incoming.ts

apps/meteor/server/models/raw/LivechatVisitors.ts

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

apps/meteor/tests/end-to-end/api/livechat/06-integrations.ts

apps/meteor/tests/end-to-end/api/livechat/11-livechat.ts

packages/apps/src/converters/IAppVisitorsConverter.ts

packages/core-typings/src/ILivechatVisitor.ts

packages/model-typings/src/models/ILivechatVisitorsModel.ts