refactor(ui): Update `<Alert />` component descriptors

[alexcarpenter]

Description

Main goal is reducing the amount of dom elements, to reduce the amount of descriptors needed. No need for wrapping icon element. Visually should be no different.

BEFORE	AFTER

Checklist

• [ ] npm test runs as expected.
• [ ] npm run build runs as expected.
• [ ] (If applicable) JSDoc comments have been added or updated for any package exports
• [ ] (If applicable) Documentation has been updated

Type of change

• [ ] 🐛 Bug fix
• [ ] 🌟 New feature
• [ ] 🔨 Breaking change
• [x] 📖 Refactoring / dependency upgrade / documentation
• [ ] other:

[changeset-bot[bot]]

🦋 Changeset detected

Latest commit: 51b97656fb332c9e95eaedd9a1eefc0fca8ee6b6

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

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