fix sourceTXID as default

[shruggr]

Description of Changes

When using Utxo.fromUtxo, sourceTXID was not being set. This causes cascading issue when trying to sign a transaction, serialize it, or calculating fees. I've included two updates.

1. Utxo.fromUtxo now sets sourceTXID on the input it returns.
2. Transaction.toBinary and Transaction.verify now check first if a sourceTXID is populated and uses that before falling back to sourceTransaction.id()/sourceTransaction.hash()

Linked Issues / Tickets

Testing Procedure

Describe the tests you've added or any testing steps you've taken.

• I have added new unit tests
• All tests pass locally
• I have tested manually in my local environment

Checklist:

• I have performed a self-review of my own code
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have updated CHANGELOG.md with my changes
• I have run npm run doc and npm run lint one final time before requesting a review
• I have run npm version patch so that my changes will trigger a new version to be released when they are merged

[shruggr]

@BraydenLangley can you please review this ASAP? @rohenaz has rewritten the js-1sat-ord package to use ts-sdk, and we're hoping to get it out before the holiday.

Thanks

[BraydenLangley]

Looks good to me!