Fix stream game id and name being empty strings instead of None

Followup to #478 since I incorrectly assumed these are nullable

Signed-off-by: Lilly Rose Berner <[email protected]>

twitchio/models/streams.py

@@ -101,8 +101,8 @@ def __init__(self, data: StreamsResponseData, *, http: HTTPClient) -> None:
 
         self.id: str = data["id"]
         self.user = PartialUser(data["user_id"], data["user_login"], data["user_name"], http=http)
-        self.game_id: str | None = data["game_id"]
-        self.game_name: str | None = data["game_name"]
+        self.game_id: str | None = data["game_id"] or None
+        self.game_name: str | None = data["game_name"] or None
         self.type: str = data["type"]
         self.title: str = data["title"]
         self.viewer_count: int = data["viewer_count"]

twitchio/types_/responses.py

@@ -1451,8 +1451,9 @@ class StreamsResponseData(TypedDict):
     user_id: str
     user_login: str
     user_name: str
-    game_id: str | None
-    game_name: str | None
+    # Game ID and name are empty when no category is set
+    game_id: str
+    game_name: str
     type: Literal["live", ""]
     title: str
     tags: list[str]