[BUG]Incorrect timestamp display in current Agent Chat conversation

[earayu]

Background

The timestamp display issue occurs specifically in Agent Chat functionality. While historical conversations show correct timestamps, the current conversation displays incorrect time values. Investigation reveals that the timestamp is being returned in milliseconds instead of seconds, causing the time formatting to be inaccurate.

Proposal

Fix the timestamp conversion logic for current Agent Chat conversations to properly handle millisecond values. This should align the timestamp format with historical conversations to ensure consistency across the chat interface.

[earayu]

fixed