wallet-rpc: clarify get_transfers "pending"

[plowsof]

pending seems to be for displaying unconfirmed outgoing transactions. not incoming. get_transfers will display transactions with < 10 confs if pending is set to false.

monero-project/monero#8140 (comment)

i have not sanity checked this by sending get_transfer calls with various combinations to confirm (out:true with pending:true and false while watching what is displayed as the confirmations creep up)

confirmed pending:true / false has no effect on incoming tx's with N confirmations

[nahuhh]

Sounds correct. I think pending and failed are for outgoing-only.

Not sure how pool behaves, whether its the entire pool, or if its unconfirmed txs destined fir the wallet

[plowsof]

Pool only shows the txs belonging to the wallet with "in" true, ive not tested any out txs though