wallet.add_input_info: also add block_height if known
wallet.add_input_info: also add block_height if known

The coin_chooser requires the block_height field (to prioritise confirmed utxos).

spesmilo/electrum,spesmilo/electrum,spesmilo/electrum,pooler/electrum-ltc,spesmilo/electrum,pooler/electrum-ltc,pooler/electrum-ltc,pooler/electrum-ltc