Cannot determine amount of signers for TX Building from Utxos

[edridudi]

While Building a Tx from UTxOs There's no way to provide the correct amount of signers to provide to balanceTx method. Suggestion: Utxo SelectionStrategy should provide the number of different (unique) addresses used in Tx and provide it to signTx method automatically using the current functional methodology.

[satran004]

Additional utxos selected during balanceTx don't get added to the TxBuilderContext's utxos list. Need to verify