fix: Add solutions for Sass challenges

[ojeytonwilliams]

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Contributes to #35753

[RandellDawson]

Although I could not pass one of the tests (see below) on the Apply a Style Until a Condition is Met with @while challenge, I believe it is related to issues #17629 and #34775. I have created a PR (#35935) that should resolve this problem with a slight rewrite of the challenge. I am fine merging this PR as it is now.

Your .text-1 class should have a font-size of 5px.

[ojeytonwilliams]

@RandellDawson I assume it failed when you put my solution into the client, rather than npm run test. If so, yeah, it's probably the browser issue raising its head again. It does look like your PR should put a stop to it, though.

[moT01]

LGTM! Thanks for contributing @ojeytonwilliams!