fix: update stale comment — thinking channel no longer tool-call-only

chat_template.jinja

@@ -231,7 +231,7 @@
         {%- endif -%}
     {%- endif -%}
 
-    {#- Render reasoning/reasoning_content as thinking channel (tool-call turns only) -#}
+    {#- Render reasoning/reasoning_content as thinking channel -#}
     {%- set thinking_text = message.get('reasoning') or message.get('reasoning_content') -%}
     {%- set thinking_gate = (loop.index0 > ns_turn.last_user_idx) or preserve_thinking -%}
     {%- if thinking_text and thinking_gate -%}