Updates UI for package duplicate settings

What does this MR do and why?

Updates package duplicate settings UI for side-by-side layout

• Tweaked the UI to use GlTable instead of GlCard as per discussion

Additionally,

• Fixes color of input when error as per pajamas guidelines
• Fixes label-for

Screenshots or screen recordings

Description	Before	After
Desktop
Mobile

How to set up and validate locally

1. Visit 'Group' > 'Settings' > 'Packages & Registries'
2. Verify duplicate package settings works

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• I have evaluated the MR acceptance checklist for this MR.

Closes #363428 (closed)