feat: We only need pages which are actionable for all customers

[tkotthakota-adobe]

https://jira.corp.adobe.com/browse/SITES-42676
https://jira.corp.adobe.com/browse/SITES-42074

Problem

CWV audit was storing suggestions for all pages, including pages where every
metric is already within acceptable thresholds (LCP ≤ 2500ms, CLS ≤ 0.1, INP ≤
200ms). These pages are not actionable and added noise to the opportunity.

Changes

src/cwv/kpi-metrics.js

• Exported METRICS and THRESHOLDS constants (previously unexported) so they can be reused outside the file.

src/cwv/opportunity-sync.js

• Added hasFailingMetrics(entry) — returns true if any device type has at least one metric exceeding its "good" threshold. Null/undefined values are treated as passing (no data = not failing).
• Before syncing suggestions, filters auditResult.cwv through hasFailingMetrics. Only pages with at least one failing metric become suggestions.
• Added a guard (Math.max(0, ...)) for the edge case where all URL entries are filtered out.
• Logs how many entries survived the filter (e.g. "site X — 2 of 15 CWV entries have failing metrics").

Why global, not PLG-only

Pages that pass all CWV thresholds are not actionable for any customer. There is
no value in storing or displaying them regardless of site type.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

📢 Thoughts on this report? Let us know!

[ramboz]

Looks overall good to me, but I would change it to all sites and not just PLG ones

[github-actions]

This PR will trigger no release when merged.

[tkotthakota-adobe]

@ramboz PR is updated.

[solaris007]

🎉 This PR is included in version 1.405.0 🎉

The release is available on GitHub release

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