Ether js signedTypeData & metamask sig utils signedTypeData_v4 producing different signature

```
import {
signTypedData,
} from "@metamask/eth-sig-util";
import { ethers } from "ethers";

const domain = {
name: "name", // contract deploy name
version: "1", // contract deploy version
chainId: 1, // env chain id
verifyingContract: "",
};

const types = {
Test: [
{ name: "Request", type: "string" },
],
};
const privateKey = Buffer.from(
"myprivatekey",
"hex"
);
```
Metamask sig utils SignTypedDataVersion.V4, (tested with SignTypedDataVersion.V3 same)
```
const signature = signTypedData({
privateKey,
data: {
types,
primaryType: "Test",
domain,
message: {
Request: "This is a request"
},
},
version: SignTypedDataVersion.V4,
});
console.log("Metamask sig utils generated signature", signature);
```
Metamask sig utils generated signature 0x93f39c57d7f8de7b033367cb5fa7bb68c6a339b0626c73febc57fdce5a779a8472b365951470ade9857e8bd26a3020e9088c110c931abd188034cbdd1e79f8191c

ether js signTypedData
```
const wallet = new ethers.Wallet(privateKey);
wallet
._signTypedData(domain, types, {
Request: "This is a request"
})
.then((signature) => {
console.log("Ether js _signTypedData", signature);
});
```
Ether js _signTypedData 0x9655d8635d4826a1c44185acb34f7c86b286e90e70bd260626c8dd112ae8f5f348f75ce387544c1734971f6ae51ad855e98a49c7e56c3a636a90f714378aca0d1c

Is sig utils deprecated, but why both produce different result of signatures? I was confusing on why these both producing different signature, does it possible both lib produce same signature?

or there is some bug over here? because when i using solidity ECDSA.recover i able to recover address from ether js's signature but not sig utils' generated signature

Start with the signTypedData entry point in @metamask/eth-sig-util and compare it with ethers.Wallet._signTypedData using the provided domain, types, message, and private key. Reproduce both signatures and check recovery with Solidity ECDSA.recover; done means identifying the encoding difference or confirming compatible behavior and documenting or testing the result.

Written by the indexing model from the issue text.