[Bugfix][MiniCPM-o] Isolate duplex handoff failures and barge-in (#6170)

Signed-off-by: Sy03 <1370724210@qq.com>

examples/online_serving/minicpmo/realtime_duplex_demo.py

@@ -372,7 +372,7 @@ def parse_args() -> argparse.Namespace:
         "--temperature",
         type=float,
         default=None,
-        help="Stage0 sampling temperature; response-required soft-interrupt uses 0.0.",
+        help="Stage 0 sampling temperature; omit to preserve the model default.",
     )
     parser.add_argument("--no-realtime-pacing", action="store_true")
     parser.add_argument("--require-audio", action="store_true")