refactor(microsoft-word): theme variables

[WalkQuackBack]

🔧 What does this fix? 🔧

Fixes many issues with the Microsoft Word userstyle... and potentially introduces many more.

🗒 Checklist 🗒

• [x] I have read and followed Catppuccin's contributing guidelines.

[WalkQuackBack]

I didn't know how to handle "applyToDocument" since it had no effect on the latest version of Microsoft Word, so I filled it.

[WalkQuackBack]

This PR breaks ink colours