fix: correct anyio stream creation syntax

[S-Naved]

Fixes TypeError during session initialization by correcting the syntax for anyio.create_memory_object_stream call. The invalid subscript syntax ([...]) was causing server startup failures.

Changes

1. Removed [...] from anyio.create_memory_object_stream[...](0) call

Verification

• All tests pass
• Linting checks complete
• Manual testing confirms server starts successfully
• Type checking passes

[Kludex]

What is the issue? What version of anyio and mcp?

[S-Naved]

When I build the local MCP it's showing me an error:
| C:\Users\MI\AppData\Local\uv\cache\ |
| archive-v0-9mRABDhgJyBu2txUuRpO\Li |
| b\site-packages\mcp\server\session. |
| py:96 in init |
| |
| 93 ) |
| 94 |
| 95 self._init_options = |
| > 96 self._incoming_messag |
| anyio.create_memory_object_st |
| 97 ServerRequestResp |
| 98 ](0) |
| 99 self._exit_stack.push |
| self._incoming_message_stream |
+-------------------------------------+
TypeError: 'function' object is not
subscriptable .
anyio 3.6.1 and mcp version is 1.12.1

[Kludex]

The minimum anyio version is 4.5.0. Bump that package, please.