Qwen3 tool calls not parsed into AIMessage.tool_calls on OCI
The model was returning tool calls in Qwen-style [tool_call]...[/tool_call] or [tool_calling]...[/tool_calling] tags, and the parser simply did not handle those tags, so everything stayed in content and tool_calls came back empty. The fix parses both tag variants into proper tool_calls, with a backr…