Update dark-experimental tokens

[sophschneider]

WHY are these changes introduced?

Fixes #0000

WHAT is this pull request doing?

How to 🎩

🖥 Local development instructions 🗒 General tophatting guidelines 📄 Changelog guidelines

🎩 checklist

• [ ] Tested a snapshot
• [ ] 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

[sophschneider]

/snapit

[github-actions[bot]]

🫰✨ Thanks @sophschneider! Your snapshots have been published to npm.

Test the snapshots by updating your package.json with the newly published versions:

"@shopify/polaris-icons": "0.0.0-snapshot-20240425165202",
"@shopify/polaris-migrator": "0.0.0-snapshot-20240425165202",
"@shopify/polaris": "0.0.0-snapshot-20240425165202",
"@shopify/polaris-tokens": "0.0.0-snapshot-20240425165202",
"@shopify/stylelint-polaris": "0.0.0-snapshot-20240425165202"

[sophschneider]

/snapit

[github-actions[bot]]

🫰✨ Thanks @sophschneider! Your snapshots have been published to npm.

Test the snapshots by updating your package.json with the newly published versions:

"@shopify/polaris-icons": "0.0.0-snapshot-20240425185219",
"@shopify/polaris-migrator": "0.0.0-snapshot-20240425185219",
"@shopify/polaris": "0.0.0-snapshot-20240425185219",
"@shopify/polaris-tokens": "0.0.0-snapshot-20240425185219",
"@shopify/stylelint-polaris": "0.0.0-snapshot-20240425185219"