Polish uiState for gaps

[compulim]

Fixes #

Changelog Entry

Added

• Added blueprint of starter prompts in the Fluent theme, in PR #5270, #5276, #5279, and #5284, by @OEvgeny and @compulim

Description

Fixed wrong gaps in disabled mode.

Specific Changes

• Starter prompts CSS to use normal gaps for disabled mode, only use different gaps for blueprint

• I have added tests and executed them locally
• I have updated CHANGELOG.md
• I have updated documentation

Review Checklist

This section is for contributors to review your work.

• Accessibility reviewed (tab order, content readability, alt text, color contrast)
• Browser and platform compatibilities reviewed
• CSS styles reviewed (minimal rules, no z-index)
• Documents reviewed (docs, samples, live demo)
• Internationalization reviewed (strings, unit formatting)
• package.json and package-lock.json reviewed
• Security reviewed (no data URIs, check for nonce leak)
• Tests reviewed (coverage, legitimacy)