`Date.prototype.toLocaleString` behavior violates the ECMA-402

[Vellumic]

Describe the bug

The Date.prototype.toLocaleString is not working as expected, it always adds both date and time when call it with dateStyle/timeStyle option.

To Reproduce

const date = new Date(Date.UTC(2024, 2, 10, 2, 30))
console.log(date.toLocaleString("en-US", {dateStyle: "short"}))
console.log(date.toLocaleString("en-US", {timeStyle: "short"}))

Expected behavior

Running this code, 3/10/24 and 2:30 AM should be printed, but instead we get 3/10/24, 2:30:00 AM and March 10, 2024 at 2:30 AM. The expected behavior can be found in steps 30-31 of this ECMAScript specification part.