PSBT HD signing does not support taproot

[gregdhill]

I want to use signInputHD for a taproot script path spend but that will fail if I don't specify bip32Derivation here. It is also not possible to use inputHasHDKey without bip32Derivation. I can't set bip32Derivation since tapLeafScript is defined which would otherwise throw this error. I'm assuming it is intended to use tapBip32Derivation instead but that doesn't seem to be wired up.

[gregdhill]

For more context I am working on integrating the code linked here (creating inscriptions) with the MetaMask Bitcoin snap which fails here. The only solution I can see right now is to use signAllInputs and force the derivation path from the caller.

[junderw]

@motorina0 Why do we prevent HD path info in taproot inputs?