Failed to Connect to MCP Inspector

Description:
When following the [README.md](https://github.com/Azure-Samples/remote-mcp-apim-functions-python) instructions to connect the MCP Inspector to the API Management SSE endpoint, the Inspector connection fails because Unauthorized from MCP server.


Repro Steps:

Run azd auth login.
Run azd init -t Azure-Samples/remote-mcp-apim-functions-python.
Run azd up.
Run npx @modelcontextprotocol/inspector.
Open the MCP Inspector web app ->Set the transport type to SSE -> Set the url to https://.azure-api.net/mcp/sse -> Click Connect

Expected behavior:
Connect to Azure function app from a client successfully.

从 README.md 开始，使用 azd auth login、azd up 和 npx @modelcontextprotocol/inspector 重现文档中说明的流程。检查 azd 输出中显示的 SSE URL，以及 API Management 端点所要求的身份验证。当 MCP Inspector 通过 SSE 端点成功连接到已部署的 Azure Function app 时，即表示完成。

由索引模型根据 Issue 内容生成。