Core: turn MultiServer item_names and location_names into instance va…

…rs (#4053)

MultiServer.py

@@ -185,11 +185,9 @@ class Context:
     slot_info: typing.Dict[int, NetworkSlot]
     generator_version = Version(0, 0, 0)
     checksums: typing.Dict[str, str]
-    item_names: typing.Dict[str, typing.Dict[int, str]] = (
-        collections.defaultdict(lambda: Utils.KeyedDefaultDict(lambda code: f'Unknown item (ID:{code})')))
+    item_names: typing.Dict[str, typing.Dict[int, str]]
     item_name_groups: typing.Dict[str, typing.Dict[str, typing.Set[str]]]
-    location_names: typing.Dict[str, typing.Dict[int, str]] = (
-        collections.defaultdict(lambda: Utils.KeyedDefaultDict(lambda code: f'Unknown location (ID:{code})')))
+    location_names: typing.Dict[str, typing.Dict[int, str]]
     location_name_groups: typing.Dict[str, typing.Dict[str, typing.Set[str]]]
     all_item_and_group_names: typing.Dict[str, typing.Set[str]]
     all_location_and_group_names: typing.Dict[str, typing.Set[str]]
@@ -198,7 +196,6 @@ class Context:
     """ each sphere is { player: { location_id, ... } } """
     logger: logging.Logger
 
-
     def __init__(self, host: str, port: int, server_password: str, password: str, location_check_points: int,
                  hint_cost: int, item_cheat: bool, release_mode: str = "disabled", collect_mode="disabled",
                  remaining_mode: str = "disabled", auto_shutdown: typing.SupportsFloat = 0, compatibility: int = 2,
@@ -269,6 +266,10 @@ def __init__(self, host: str, port: int, server_password: str, password: str, lo
         self.location_name_groups = {}
         self.all_item_and_group_names = {}
         self.all_location_and_group_names = {}
+        self.item_names = collections.defaultdict(
+            lambda: Utils.KeyedDefaultDict(lambda code: f'Unknown item (ID:{code})'))
+        self.location_names = collections.defaultdict(
+            lambda: Utils.KeyedDefaultDict(lambda code: f'Unknown location (ID:{code})'))
         self.non_hintable_names = collections.defaultdict(frozenset)
 
         self._load_game_data()