Update internal eval & latex to use the new paste service API

[ChrisLovering]

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[ChrisLovering]

Hi Chris! Thanks for the contribution!

Please could you complete the checklist in the issue body before we can review and approve this PR. Thank you in advance!

Ah, the checklist, a true masterpiece of human achievement! Because who wouldn’t want to spend their precious time meticulously checking off items like "Did you use a semicolon?" or "Did you sacrifice a rubber duck to the coding gods?"

Fear not, dear Joe! My contribution is like a diamond in the rough, waiting for the magical checklist wand to bless it. So I will go ahead, dive into the abyss of checkboxes, and emerge victorious! And remember, if I miss one, the entire universe might collapse. So no pressure!

(Disclaimer: The universe will not actually collapse.)

[Xithrius]

We have once again narrowly avoided a collapse of the universe itself, for our hero ChrisLovering has saved us from yet certain doom.