Update examples/disaggregated_prefill_v1/load_balance_proxy_server_example.py

handle suggestion

Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>

Author: Shirley125

examples/disaggregated_prefill_v1/load_balance_proxy_server_example.py

@@ -541,7 +541,7 @@ async def generate_stream():
                             released_kv = True
                         try:
                             chunk_str = chunk.decode("utf-8").strip()
-                        except Exception:
+                        except UnicodeDecodeError:
                             logger.debug(
                                 f"Skipping chunk: {chunk}")
                             yield chunk