fix(agentscope): use correct to_agentscope() instead of to_crewai() in toolset()

The toolset() function in agentscope integration was incorrectly calling
.to_crewai() instead of .to_agentscope(), returning CrewAI-formatted tools
instead of AgentScope-formatted ones.

Change-Id: I41758ca6e22173cfc4cc47fa95713c8fb5d992a7
Co-developed-by: Claude <noreply@anthropic.com>
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: OhYee

agentrun/integration/agentscope/builtin.py

@@ -43,7 +43,7 @@ def toolset(
     """将内置工具集封装为 LangChain ``StructuredTool`` 列表。 / AgentScope Built-in Integration Functions"""
 
     ts = _toolset(input=name, config=config)
-    return ts.to_crewai(
+    return ts.to_agentscope(
         prefix=prefix,
         modify_tool_name=modify_tool_name,
         filter_tools_by_name=filter_tools_by_name,