Fix a few issues found during fine-tuning (#2582)

ming030890

2025-07-04 a750595594321833b48dc19798eed66876a100b4

 funasr/models/rwkv_bat/rwkv.py

@@ -76,6 +76,7 @@
        x = x + self.dropout_ffn(ffn)
        return x, state


class RWKVDecoderLayer(torch.nn.Module):
    """RWKV module.