Import PSBT is not importing partial signatures

[jbrauck-unchained]

Recreation steps:

1. Craft a transaction in caravan, download unsigned PSBT.
2. Sign transaction outside of caravan, copy partially signed PSBT
3. Import wallet config again, go to "Send", "Import PSBT"
4. Import the partially signed PSBT
5. Note that the signature did not carry over

This definitely feels like a bug, let me know if I am wrong.

Unsigned PSBT

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

Partially signed PSBT

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

[bucko13]

Marking this as a feature request (aka "enhancement"). This is expected behavior though agreed it's undesirable. Would be a nice enhancement to auto parse any sigs as well. It should be pretty easy for someone new to the code base to resolve so marked it as a good first issue. I'm happy to try and help get someone started if they have specific questions for implementation.