fix: battle tested logic

[wackerow]

Description

• Fixes a bug introduced in refactor(StakingProductsCardGrid): update types, logic, and UI composition #11477 with the logic for the "battle tested" indicator on staking products.
• That PR switches this logic to use guard statements, but returning after the first check was causing the "Caution" flag (6-12 months live) to take precedent even if the product had been around over 1 year ("Valid" flag). This flips the ordering so it will return the best possible flag, falling back to the "warning" flag.

Related Issue

Surfaced with PR #11477
Can see bug here (before merging): https://dev--ethereumorg.netlify.app/en/staking/saas/#saas-providers (Notice all products are listed with a yellow caution icon for "battle tested")

[netlify]

✅ Deploy Preview for ethereumorg ready!

Name	Link
🔨 Latest commit	d0d0056
🔍 Latest deploy log	https://app.netlify.com/sites/ethereumorg/deploys/660996241146330009c7353b
😎 Deploy Preview	https://deploy-preview-12607--ethereumorg.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

---

To edit notification comments on pull requests, go to your Netlify site configuration.