fix(ui): group result counts by locale

[Gordex2014]

Closes #1426.

Summary

• Format Resources result totals and included-resource counts with the active UI locale.
• Preserve partial-total + wording and existing small and zero values.
• Leave search requests, pagination, Bundle.total, and FHIR wire values unchanged.

Coverage

• English: 12,345 results
• Spanish: 12.345 resultados
• German: 12.345 Ergebnisse
• Grouped included count: 1,235 results · 1,234 included
• Grouped partial count: 1,234+ results
• Small and zero totals
• Outgoing query remains the typed query plus the existing _total=accurate

Before and after

Before	After

Temporary review evidence expires 2026-09-26T21:17:00.786Z.

Checks

• cargo test -p helios-ui
• cargo build -p helios-hfs --features ui
• Focused Chromium locale-count test
• Chromium Resources and Queries suites: 124 passed
• Independent review completed with no remaining findings

Risk

Low. The change only formats rendered count text through the browser's locale support.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

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