[send_payment] return Musig2VerifyError when multiple nodes send payment self

[gpBlockchain]

commit: bde0dbc

multiple nodes keep transferring to themselves, which causes the node to report TlcAmountExceedLimit, Musig2RoundFinalizeError, and then causes the node get stuck in the Waitingtlcack

err log

  2025-01-14T09:03:51.930022Z ERROR fnn::fiber::channel: Error while processing channel command: TlcAmountExceedLimit

  2025-01-14T09:02:10.483359Z ERROR fnn::fiber::channel: Error while processing channel command: WaitingTlcAck
  2025-01-14T09:02:10.538608Z ERROR fnn::fiber::channel: Error while processing channel command: WaitingTlcAck
  2025-01-14T09:02:13.812686Z ERROR fnn::fiber::channel: Error while processing channel command: WaitingTlcAck
  2025-01-14T09:02:31.744385Z ERROR fnn::fiber::channel: Error while processing channel message: Musig2RoundFinalizeError(InvalidAggregatedSignature(BadSignature)) with message: RevokeAndAck(RevokeAndAck { channel_id: Hash256(0x89a8477ab5e44def0f51c2a4f6f56f400ca2b78817f44c78ac63b4a2cd0067e3), revocation_partial_signature: Valid(Scalar(#244ee3579f80afe1)), commitment_tx_partial_signature: Valid(Scalar(#3f7b65e4e9b6c1a1)), next_per_commitment_point: Pubkey(PublicKey(2df118cb974463253048933b8d210087608006e35eca2fbf59ad0ccd3679a7ed9f6079a3a860d5abcc641335f0dbd4fe9167e8a2fdbb8e31607320739e627d8b)) })
  2025-01-14T09:02:34.156586Z ERROR fnn::fiber::channel: Error while processing channel message: Musig2VerifyError(BadSignature) with message: CommitmentSigned(CommitmentSigned { channel_id: Hash256(0x89a8477ab5e44def0f51c2a4f6f56f400ca2b78817f44c78ac63b4a2cd0067e3), funding_tx_partial_signature: Valid(Scalar(#60d4c10d4aff75b1)), commitment_tx_partial_signature: Valid(Scalar(#7e60d2f31774138b)), next_local_nonce: PubNonce { R1: Point(027bfe430069be22b9c88cae534fd9b84b9cb84e241d2278ca74ffc73eefd90b7d), R2: Point(03a1ba7ec87558c2a2a0b219fb5d53793cb588ced9c7a4d39a8e6fdb68efe8328f) } })