Fix for changes to movie in FetchedApp

Author: Gobot1234

steam/app.py

@@ -1682,7 +1682,7 @@ def __init__(self, state: ConnectionState, movie: dict[str, Any]):
         self._state = state
         self.name: str = movie["name"]
         self.id: int = movie["id"]
-        self.url: ReadOnly[str] = movie["mp4"]["max"]
+        self.url: ReadOnly[str] = movie.get("dash_av1") or movie.get("dash_h264") or movie.get("hls_h264") or ""
         match = re.search(r"t=(\d+)", self.url)  # type: ignore  # should become unnecessary at some point
         self.created_at = DateTime.from_timestamp(int(match[1])) if match else None