fix chunk size

Author: lukasIO

livekit-rtc/livekit/rtc/data_stream.py

@@ -305,7 +305,10 @@ def __init__(
         )
 
     async def write(self, data: bytes):
-        chunked_data = [data[i : i + 2] for i in range(0, len(data), 2)]
+        chunked_data = [
+            data[i : i + STREAM_CHUNK_SIZE]
+            for i in range(0, len(data), STREAM_CHUNK_SIZE)
+        ]
 
         for chunk in chunked_data:
             self._next_chunk_index += 1