Core: fix Set import (#6235)

mistake made in pr #5048
https://github.com/ArchipelagoMW/Archipelago/pull/5048#discussion_r3328989050

BaseClasses.py

@@ -8,10 +8,10 @@ import secrets
 import warnings
 from argparse import Namespace
 from collections import Counter, deque, defaultdict
-from collections.abc import Callable, Collection, Iterable, Iterator, Mapping, MutableSequence, Set
+from collections.abc import Callable, Collection, Iterable, Iterator, Mapping, MutableSequence, Set as AbstractSet
 from enum import IntEnum, IntFlag
-from typing import (AbstractSet, Any, ClassVar, Dict, List, Literal, NamedTuple,
-                    Optional, Protocol, Tuple, Union, TYPE_CHECKING, overload)
+from typing import (Any, ClassVar, Dict, List, Literal, NamedTuple,
+                    Optional, Protocol, Set, Tuple, Union, TYPE_CHECKING, overload)
 import dataclasses
 
 from typing_extensions import NotRequired, TypedDict