no but they do count toward the total amount displayed as received

Also: suppose you goal is 1 btc and you end up meeting that goal with 0.5 in reversible transactions and 0.5 in irreversible transactions

You can use your 0.5 btc in "irreversible transactions" to make a contribution to your own fundraiser, bringing it up to 1 btc total in reversible transactions

That's enough to trigger the smart contract so then you can withdraw it all (though you will probably need to add a bit extra to pay for mining fees)