fix the viewbox content scaling to select the minimum scaling

[MatheusrdSantos]

What?

This PR fixes the implementation of the preserveAspectRatio attribute.

Why?

The 'meet' pattern was wrong and adds the implementation for the 'slice' was missing.

How?

Testing?

New Dependencies?

Screenshots

before:

after:

Suggested Reading?

https://www.w3.org/TR/SVG11/coords.html#ViewBoxAttribute

Anything Else?

Checklist

• [ ] I read CONTRIBUTING.md.
• [ ] I read MAINTAINERSHIP.md#pull-requests.
• [ ] I added/updated unit tests for my changes.
• [ ] I added/updated integration tests for my changes.
• [ ] I ran the integration tests.
• [ ] I tested my changes in Node, Deno, and the browser.
• [ ] I viewed documents produced with my changes in Adobe Acrobat, Foxit Reader, Firefox, and Chrome.
• [ ] I added/updated doc comments for any new/modified public APIs.
• [ ] My changes work for both new and existing PDF files.
• [ ] I ran the linter on my changes.