AcidTest: bip32_derivation not populated for mainnet coins

[OttoAllmendinger]

Summary

AcidTest only populates bip32_derivation in PSBT inputs for testnet coins. When using mainnet coins (e.g., btc, bch, ltc), the generated PSBTs have empty bip32_derivation and tap_key_origins fields.

Reproduction

import { testutils } from '@bitgo/wasm-utxo';
const { AcidTest } = testutils;

// Works - testnet with full psbt
const testnetPsbt = AcidTest.withConfig('tbtc', 'unsigned', 'psbt').createPsbt();

// Fails - mainnet with full psbt (missing bip32_derivation)
const mainnetPsbt = AcidTest.withConfig('btc', 'unsigned', 'psbt').createPsbt();

Observed behavior

When parsing mainnet PSBTs created by AcidTest, consumers that require derivation info will fail:

Failed to parse transaction: Input 0: missing or invalid derivation info (not replay protection): Invalid input: both bip32_derivation and tap_key_origins are empty

Expected behavior

AcidTest should populate bip32_derivation for mainnet coins the same way it does for testnet coins when using full psbt format.

Notes

• This also affects psbt-lite format for both testnet and mainnet (expected, as psbt-lite intentionally omits derivation info)
• Discovered while writing tests for parseTransaction in indexerdb-microservice