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Missing Chat Message Events (USER_TALKING_MESSAGE, etc.) in Web SDK

Description: I am experiencing a critical issue with the @heygen/liveavatar-web-sdk where chat-related events are failing to fire. Consequently, the chat state remains empty even after successful interactions with the avatar.

The specific events not firing are:

USER_TALKING_MESSAGE

AVATAR_TALKING_MESSAGE

USER_END_MESSAGE

AVATAR_END_MESSAGE

Reproduction:

Run the standard demo application.

Start a session and interact with the avatar.

Audio/Video works correctly, but the chat history log remains empty.

Console output shows Chat Messages: [] and no event logs appear.