bug: Fields in encodeArguments gets wrapped in another field in acvm

[Maddiaa0]

At this line of code:

aztec-packages/yarn-project/acir-simulator/src/abi_coder/encoder.ts

Line 22 in e61b65f

this.flattened.push(new Fr(arg));

.

Passing in a field results in the field being wrapped within another field.
Prevent this behaviour