Reuse precomputed ciphertexts from the EVM store

[goshawk-3]

Problem

In fhEVM native upon re-executing runTrivialEncrypt, it was observed that the existing ciphertexts for previously computed handles are not reused. Instead, the Executor is retasked to recompute them again

 function runTrivialEncrypt() external virtual returns (uint256 result) {
        bytes1 toType = 0x03;
        for (uint256 i = 1; i <= 3; i++) {
            this.trivialEncrypt(i, toType);
        }
    }

Scenario

1. Execute runTrivialEncrypt in BLOCK_N
2. Wait until BLOCK_N + 5 for the handles to be persisted in EVM (materialized)
3. Re-execute runTrivialEncrypt in BLOCK_N + 5 + 1

Expected result

As with fhevm-go-coproc, we should leverage precomputed ciphertexts. In fhevm-go-coproc, successfully computed handles are marked as done in SQLite storage.