Sync difference of squares

[mk-mxp]

This will be the #48in24 exercise on 2024-04-16. Important files changed, but re-running tests on submitted student code not required.

• Tests included input "10", problem spec had input "1" instead. As the problem is linear, only cheating solutions would fail the changed test suite.
• Test ordered according to problem spec order.

Closes #676

[github-actions]

This PR touches files which potentially affect the outcome of the tests of an exercise. This will cause all students' solutions to affected exercises to be re-tested.

If this PR does not affect the result of the test (or, for example, adds an edge case that is not worth rerunning all tests for), please add the following to the merge-commit message which will stops student's tests from re-running. Please copy-paste to avoid typos.

[no important files changed]

For more information, refer to the documentation. If you are unsure whether to add the message or not, please ping @exercism/maintainers-admin in a comment. Thank you!

[homersimpsons]

I did not check the UUIDs. Thank you for the re-ordering of the test to follow specification's order.

[homersimpsons]

@mk-mxp I'm wondering if we have a list of all not-synced exercises (configlet certainly has this).

[mk-mxp]

@homersimpsons I made #628 a while ago, and I have assembled a list of dates for #48in24 exercises on my machine. I wanted to extract syncing issues for the #48in24 exercises about 1-2 weeks ahead of their date (not too early, because Exercism re-works the instructions / introductions also just a few days in advance). But I also wanted to write all that into an issue like #630 when I have time these days.