chore: Start Livechat bundling optimizations (#30170)

packages/livechat/package.json

packages/livechat/src/components/MarkdownBlock/index.tsx

packages/livechat/src/components/Messages/Message/index.js

...es/livechat/src/components/Messages/MessageText/index.tsx

...es/livechat/src/components/uiKit/message/Mrkdwn/index.tsx

...livechat/src/components/uiKit/message/PlainText/index.tsx

packages/livechat/src/helpers/resolveDate.ts

packages/livechat/src/lib/api.js

packages/livechat/src/lib/locale.js

packages/livechat/src/routes/Chat/component.js

packages/livechat/src/routes/GDPRAgreement/component.js

packages/livechat/src/routes/LeaveMessage/index.tsx

yarn.lock