fix(core/chip): adjust width on outline variant

[matthiashader]

💡 What is the current behavior?

• The outline variant with the same content is 2px widder than there non outline counterpart

GitHub Issue Number: Closes #1161

🆕 What is the new behavior?

• outline and normal variant have the same width
• same applies for the icon variant
• NOTE: pills also utilizing the chip mixins, accordingly the chips have also been adapted!

🏁 Checklist

A pull request can only be merged if all of these conditions are met (where applicable):

• [ ] 🦮 Accessibility (a11y) features were implemented
• [ ] 🗺️ Internationalization (i18n) - no hard coded strings
• [ ] 📲 Responsiveness - components handle viewport changes and content overflow gracefully
• [ ] 📄 Documentation was reviewed/updated (pnpm run docs)
• [ ] 🧪 Unit tests were added/updated and pass (pnpm test)
• [x] 📸 Visual regression tests were added/updated and pass (Guide)
• [x] 🧐 Static code analysis passes (pnpm lint)
• [x] 🏗️ Successful compilation (pnpm build, changes pushed)

👨‍💻 Help & support

[changeset-bot[bot]]

🦋 Changeset detected

Latest commit: 67ef74d95ddba8648d53ea414a0ba4009c0076c9

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

This PR includes changesets to release 4 packages

| Name | Type | | ------------------- | ----- | | @siemens/ix | Patch | | @siemens/ix-angular | Patch | | @siemens/ix-react | Patch | | @siemens/ix-vue | Patch |

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