fix: msg_stamp.size() is unsigned,should convert to int (#2523)

TouchZZZ

2025-05-22 eccf74684743593950ad259877db7ce9ffc06e93

 funasr/models/seaco_paraformer/export_meta.py

@@ -53,7 +53,7 @@
                0: "num_hotwords",
            },
            "hw_embed": {
                0: "num_hotwords",
                1: "num_hotwords",
            },
        }