BREAKING CHANGE: Update Signing Message for Funding Lock and Commitment Lock (with Pending HTLC)

[jjyr]

This PR update the signing message of funding lock and commitment lock(with pending htlc).

In the original code, the signing message was tx_hash. This approach faces challenges during script upgrades because the cell_dep field in the transaction became invalid, which causes the entire transaction invalid.

To resolve this, we introduce a new signing message format that excludes cell_dep and other fields, ensuring compatible across script cell upgrades. The new message computed as follows:

1. Hashing Inputs: iterate all inputs and hash the outpoint (32 bytes each).
2. Hashing Outputs: For each output, hash:
   1. cell output (molecule serialized cell output structure),
   2. data len (4 bytes, length of the output data, little endian encoding),
   3. data (the actual output data).

The resulting hash is the signing message.