[Pagination] Remove NDL fallbacks

[aveline]

WHY are these changes introduced?

Fixes https://github.com/Shopify/polaris-ux/issues/554

WHAT is this pull request doing?

Removes fallback references to newDesignLanguage in the Pagination component

How to 🎩

🖥 Local development instructions
🗒 General tophatting guidelines
📄 Changelog guidelines

🎩 checklist

• Tested on mobile
• Tested on multiple browsers
• Tested for accessibility
• Updated the component's README.md with documentation changes
• Tophatted documentation changes in the style guide
• For visual design changes, pinged one of @ HYPD, @ mirualves, @ sarahill, or @ ry5n to update the Polaris UI kit

[github-actions]

🟢 This pull request modifies 5 files and might impact 2 other files.

Details:

All files potentially affected (total: 2)

• /src/components/Page/Page.tsx
• /src/components/Page/components/Header/Header.tsx

🧩 src/components/Page/components/Header/Header.tsx (total: 1)

Files potentially affected (total: 1)

• /src/components/Page/Page.tsx

🧩 src/components/Page/components/Header/tests/Header.test.tsx (total: 0)

Files potentially affected (total: 0)

🎨 src/components/Pagination/Pagination.scss (total: 2)

Files potentially affected (total: 2)

• /src/components/Page/components/Header/Header.tsx
• /src/components/Page/Page.tsx

🧩 src/components/Pagination/Pagination.tsx (total: 0)

Files potentially affected (total: 0)

🧩 src/components/Pagination/tests/Pagination.test.tsx (total: 0)

Files potentially affected (total: 0)

[aveline]

I am wondering whether the interface PaginationProps can be removed altogether?

[kyledurand]

Just pushed up a couple of small changes. I was going to try to explain how to remove the extend from the Pagination props but would have been too much writing and confusing I think 😄

[alex-page]

This is so awesome we can remove this entire file 🙌 🏄‍♂️ 🌌

[alex-page]

Amazing work @aveline 🔥 🔥 🔥