Centralize filter-reset logic to improve maintainability and consistency.
- Add `resetPricingFilters` helper to `web/src/helpers/utils.js`, encapsulating all reset actions (search, category, currency, ratio, group, quota type, etc.).
- Update `PricingFilterModal.jsx` and `PricingSidebar.jsx` to import and use the new utility instead of keeping their own duplicate `handleResetFilters`.
- Removes repeated code, ensures future changes to reset behavior require modification in only one place, and keeps components lean.
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