(Bug) - Update default focus state for Components

[mstuartf]

Describe the bug

There are focus state issues across some NewsKit components and on the NewsKit documentation site, where the correct focus preset is not being referenced - resulting in a mix of NewsKit and user-agent styles.

Design: https://www.figma.com/file/1Hwdf8JOtZbismmNK7WPEi/Focus-states-fixes?node-id=1%3A44&t=0zUKHXJFLujV5j7N-11

To Reproduce

Steps to reproduce the behavior:

1. Go to '...'
2. Click on '....'
3. Scroll down to '....'
4. See error

Expected behavior

A clear and concise description of what you expected to happen.

Screenshots / Video / Test Environment

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Desktop (please complete the following information):

• OS: [e.g. iOS]
• Browser [e.g. chrome, safari]
• Version [e.g. 22]

Smartphone (please complete the following information):

• Device: [e.g. iPhone6]
• OS: [e.g. iOS8.1]
• Browser [e.g. stock browser, safari]
• Version [e.g. 22]

Additional context

Add any other context about the problem here.