Apply t('home.count') localization to cash-receipt list page

- Replace NumericFormat with t('home.count') for transaction counts
  - approvalCount (승인 건수)
  - cancelCount (취소 건수)
- Remove NumericFormat import from cash-receipt list-page.tsx
- Remove duplicate count keys from locale files (keeping home.count)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

src/locales/ko.json

@@ -366,7 +366,6 @@
         "todaySettlement": "오늘 정산",
         "approvalCount": "승인 건수",
         "cancelCount": "취소 건수",
-        "count": "건",
         "depositCompleted": "입금완료",
         "settlementLimit": "정산한도",
         "percentRemaining": "% 남음",