feat: add support for size to Blankslate

[joshblack]

Closes https://github.com/github/primer/issues/4863

Changelog

New

• Add support for size to Blankslate

Changed

• Update overall styling to align with intended usage in Figma

Removed

Rollout strategy

• Minor release

[github-actions]

👋 Hi, this pull request contains changes to the source code that github/github depends on. If you are GitHub staff, we recommend testing these changes with github/github using the integration workflow. Thanks!

[github-actions]

size-limit report 📦

Path	Size
packages/react/dist/browser.esm.js	102.58 KB (0%)
packages/react/dist/browser.umd.js	102.84 KB (0%)

[changeset-bot]

🦋 Changeset detected

Latest commit: b15f6d5

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@primer/react	Minor

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[lukasoppermann]

👍 LGTM

Is there any way we can get it out of experimental? I mean, is it really experimental?

[lukasoppermann]

Actually I noticed that the icon size for small should be 24px, but it is 16 at the moment. Can we change this?

[francinelucca]

LGTM as long as the visual changes are expected 👀

[lukasoppermann]

Some more updates were added to the Figma version, specifically to the small variant: https://www.figma.com/design/GCvY3Qv8czRgZgvl1dG6lp/Primer-Web?node-id=4398-2383&t=T3iXg81O8v9mxzrZ-4

[joshblack]

@lukasoppermann just made the two updates! (Icon and small variant, not spacious padding)

[lukasoppermann]

Hey @joshblack,

great. Some minor points:

1. Could you add a border to the stories with narrow and spacious, as this makes it easier to see the difference.
2. The small variant should use a small button variant as well.
3. Maybe we can make primary and secondary action togglable in the playground story?

[lukasoppermann]

Great changes, all that is left is to make sure that in the small variant, the actions use the small variant as well.