fix(tests): import NotRequired from typing_extensions for Python 3.10

typing.NotRequired is 3.11+, but this project supports >=3.10, so the new
tests broke collection on every 3.10 job and pyright (which also resolves
against 3.10) reported the TypedDict keys as required.

Matches the convention already used elsewhere in the suite.

Author: sainikhiljuluri

tests/server/mcpserver/test_func_metadata.py

@@ -5,14 +5,15 @@
 # pyright: reportUnknownLambdaType=false
 from collections.abc import Callable
 from dataclasses import dataclass
-from typing import Annotated, Any, Final, NamedTuple, NotRequired, TypedDict
+from typing import Annotated, Any, Final, NamedTuple, TypedDict
 
 import annotated_types
 import jsonschema
 import pytest
 from dirty_equals import IsPartialDict
 from mcp_types import CallToolResult, InputRequiredResult
 from pydantic import BaseModel, Field
+from typing_extensions import NotRequired
 
 from mcp.server.mcpserver.exceptions import InvalidSignature
 from mcp.server.mcpserver.utilities.func_metadata import func_metadata