[feature]: For external subsystems avoid the automatic FeeBumping of Transactions by the sweeper

[ziggie1984]

Currently when trying to increase the fee rate of utxos especially for utxos which are not external to the sweeper we would start to first consider aggregating them with internal utxos and moreover spin up a FeeBumper which increases the fee of the transaction after every block (in case the transaction remains still unconfirmed). We should not do this for external utxos, or make it an opt-in feature. But we should not fee-bump it by default.