By default hardhat provides 20 signer accounts for testing.
Is it possible to create random wallet on-the-fly and then connect it to hardhat network for testing?

So far, I try this code.

    const provider = new ethers.JsonRpcProvider("http://127.0.0.1:8545");
    const wallet = ethers.Wallet.createRandom().connect(provider);
    console.log((await ethers.getSigners()).length);

I expect this should return 21, but it still returns 20 accounts.
Can anyone point out where do i go wrong?

Any help is appreciated, thanks.