Bug in test: test_valid_log_utf16_max_log_len_not_even

[mikhailOK]

The test is non-deterministic
Failure here: https://gitlab.com/near-protocol/nearcore/-/jobs/330912562

Bug here:

    let string = "ab";
    let mut utf16_bytes: Vec<u8> = vec![0u8; 0];
    for u16_ in string.encode_utf16() {
        utf16_bytes.push(u16_ as u8);
        utf16_bytes.push((u16_ >> 8) as u8);
    }
    logic.log_utf16(std::u64::MAX, utf16_bytes.as_ptr() as _).expect("Valid utf-16 string_bytes");

log-utf16 with MAX passed as length expects a string terminated by two null bytes, but the test passes a buffer with no terminator