expect().toBe() diff broken with unicode

[pfgithub]

What version of Bun is running?

1.1.7+b0b7db5c0

What platform is your computer?

Darwin 23.2.0 arm64 arm

What steps can reproduce the bug?

import {expect, test} from "bun:test";

test("toBe", () => {
    expect("\xe6\xb5").toBe("\u6D4B");
});

bun test a.test.js

What is the expected behavior?

Expected: æµ
Received: 测

What do you see instead?

Expected: "���"
Received: "�"

Additional information

No response