functional test: correctly detect nonstd TRUC tx vsize in feature_taproot #32859

1538 | @@ -1538,7 +1539,8 @@ def test_spenders(self, node, spenders, input_counts):
1539 |                  is_standard_tx = (
1540 |                      fail_input is None  # Must be valid to be standard
1541 |                      and (all(utxo.spender.is_standard for utxo in input_utxos))  # All inputs must be standard
1542 | -                    and tx.version in TX_STANDARD_VERSIONS)  # The tx version must be standard
1543 | +                    and tx.version in TX_STANDARD_VERSIONS # The tx version must be standard
1544 | +                    and not (tx.version == 3 and tx.get_vsize() > TRUC_MAX_VSIZE))  # And any additional topological standardness rules followed

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