Verify whether we should send public label XOR delta

[sinui0]

tlsn/mpc-core/src/garble/generator/half_gate.rs

Line 74 in 69b65c4

let public_labels = [Block::random(rng), Block::random(rng) ^ delta];

Here we XOR delta with public label corresponding to 1, whereas emp-toolkit only sends the random label prior to XOR. Verify that what we are doing is correct or fix

[themighty1]

Also asked emp-toolkit/emp-tool#161

[sinui0]

As discussed, we are going to remove this explicit concept of "public labels" within the halfgate implementation. We can achieve the same effect by simply including these labels as input labels to the circuit. There will be a tiny overhead associated with having duplicate wire labels in memory, but that is trivial.