Capture task name in asyncio integration

### Problem Statement

We currently inspect the function name through `__name__` or `__qualname__` to determine the name attribute on the span in the asyncio task factory. We ignore the name users pass to `asyncio.create_task`. See https://docs.python.org/3/library/asyncio-task.html.

### Solution Brainstorm

Attach the name argument from `asyncio.create_task` to the span.

从 asyncio task factory 和 issue 中链接的 Python asyncio.create_task 文档开始。追踪当前如何从 __name__ 或 __qualname__ 派生 span 名称，然后验证如何观察显式提供的任务名称。完成的标准是捕获所提供的任务名称，同时保留现有的 fallback 行为。

由索引模型根据 Issue 内容生成。