Align chat template `enable_thinking` default with generation_config.json and the model card

chat_template.jinja

@@ -1,7 +1,7 @@
 {#- Copied from laguna_glm_thinking_v4/chat_template.jinja -#}
 {#- Removes prefix that references <think> token, and replaces message.reasoning_content reference with message.reasoning -#}
 {{- "〈|EOS|〉" -}}
-{%- set enable_thinking = enable_thinking | default(false) -%}
+{%- set enable_thinking = enable_thinking | default(true) -%}
 {%- set render_assistant_messages_raw = render_assistant_messages_raw | default(false) -%}
 {%- set add_generation_prompt = add_generation_prompt | default(false) -%}