Special tokens exposed in Chat

Bug: special tokens get printed in the chat window.

Expected behaviour: Special tokens get stripped from the output and get handled by the backend correctly.

One-off: NO (repeated)

Model: Kimi K2.5

Search: ON

Browser: Brave

<|tool_calls_section_begin|><|tool_call_begin|>functions.webSearch:1<|tool_call_argument_begin|>{"queries":["...","...","..."],"category":null,"domains":null}<|tool_call_end|><|tool_calls_section_end|>

Link to the chat: https://t3.chat/share/p4bltj76tf