Fix tool calling: support array-formatted tool content (vLLM/SGLang) (#8)

- Fix tool calling: support array-formatted tool content (vLLM/SGLang) (f35a54e09d9aa6e358cf458de0f594c9da2c3274)


Co-authored-by: Tej <cudaoom@users.noreply.huggingface.co>

chat_template.jinja

@@ -94,7 +94,7 @@ For each function call, output the function name and arguments within the follow
 {%- endif %}
 {%- if m.content is string -%}
     {{- '<tool_response>' + m.content + '</tool_response>' -}}
-{%- else -%}
+{%- elif m.content is iterable and m.content is not mapping and m.content and m.content.0.type == "tool_reference" -%}
     {{- '<tool_response><tools>\n' -}}
     {% for tr in m.content %}
         {%- for tool in tools -%}
@@ -107,6 +107,8 @@ For each function call, output the function name and arguments within the follow
         {%- endfor -%}
     {%- endfor -%}
     {{- '</tools></tool_response>' -}}
+{%- else -%}
+    {{- '<tool_response>' + visible_text(m.content) + '</tool_response>' -}}
 {% endif -%}
 {%- elif m.role == 'system' -%}
 <|system|>{{ visible_text(m.content) }}