[Test] UI - Add vitest unit tests for Teams, Models, and Usage components
Add v8-coverage-targeted unit tests for 5 previously untested files across
the Teams, Models + Endpoints, and Usage workflows:
- value_formatters.test.ts: full branch coverage of valueFormatter and
valueFormatterSpend (M/k/plain formatting, zero-value edge cases)
- DeleteTeamModal.test.tsx: confirmation input validation, key-count warning
singular/plural, onConfirm/onCancel callbacks, input reset on cancel
- TeamsFilters.test.tsx: search input binding, Filters toggle, Reset callback,
additional-filters visibility, active-filter dot indicator
- ModelsCell.test.tsx: empty/single/overflow model rendering, truncation at
30 chars, accordion expand/collapse, all-proxy-models badge in overflow
- ModelRetrySettingsTab.test.tsx: global vs model-scope headings, defaultRetry
fallback chain, setGlobalRetryPolicy/setModelGroupRetryPolicy updater
functions, Save button callback
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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