MockDate constructor doesn't support "MM/DD/YYYY, hh:ii:ss (AM|PM)" format

[inxmail-de-cln]

When creating an instance of an MockDate with i.e. "10/24/2023, 1:59:00 AM" it throws an error: AssertionError: Unhandled date format passed to MockDate constructor: 10/24/2023, 1:59:00 AM.

It occurs while running tests using the current version of the Mantine-Framework and the error is been thrown at this line: https://github.com/mantinedev/mantine/blob/master/packages/@mantine/dates/src/components/DateTimePicker/DateTimePicker.tsx#L157

I guess the origin of this string is toLocaleString.

When using this pattern in the actual Date-constructor in Chrome, Firefox or Node.js it doesn't throw an error.

console.log(new Date("10/24/2023, 1:59:00 AM"));
//2023-10-23T23:59:00.000Z

[Jimbly]

Looks probably the same as #68 - that's generally the kind of bug this library is good at helping catch - that looks like a format which will parse differently depending on the browser/Node version and the locale of the computer running the test (in many non-US/English locales, a browser is going to try to parse it as DD/MM/YYYY, I think?).