Convert transaction constants to i18n-compatible getter functions

- Convert all hardcoded constant arrays to functions accepting TFunction
- Add transaction.constants namespace with 40+ translation keys
- Update contant.ts: All exports now use get* prefix (e.g., getCashReceiptPurposeTypeBtnGroup)
- Replace ko/en properties with single name property using t() function

Updated constants:
- getAllTransactionMoidTidOptionsGroup(t)
- getAllTransactionStatusCodeBtnGroup(t)
- getAllTransactionServiceCodeOptionsGroup(t)
- getAllTransactionStatusCode(t)
- getCashReceiptPurposeTypeBtnGroup(t)
- getCashReceiptTransactionTypeBtnGroup(t)
- getCashReceiptProcessResultBtnGroup(t)
- getEscrowSearchTypeOptionsGroup(t)
- getEscrowDeliveryStatusBtnGroup(t)
- getEscrowSettlementStatusBtnGroup(t)
- getBillingSearchTypeOptionsGroup(t)
- getBillingRequestStatusBtnGroup(t)
- getBillingProcessResultBtnGroup(t)
- getBillingPaymentMethodBtnGroup(t)

Updated components (9 files):
- Filter components: all-transaction, cash-receipt, billing, escrow
- List pages: billing, cash-receipt, escrow
- UI components: list-item, important-info-section

All constants now properly support Korean/English language switching.

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

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

src/locales/ko.json

@@ -518,6 +518,46 @@
             "customerName": "고객명",
             "transactionConfirmation": "거래 확인서"
         },
+        "constants": {
+            "all": "전체",
+            "orderNumber": "주문번호",
+            "tid": "TID",
+            "approval": "승인",
+            "approvalComplete": "승인/입금완료",
+            "cancel": "취소",
+            "cancelShort": "후취소",
+            "totalCancel": "전취소/취소",
+            "totalCancelShort": "전취소",
+            "refund": "환불",
+            "deposit": "입금",
+            "waitingDeposit": "입금대기",
+            "issueCancel": "채번취소",
+            "creditCard": "신용카드",
+            "virtualAccount": "가상계좌",
+            "accountTransfer": "계좌이체",
+            "accountSimpleTransfer": "계좌간편결제",
+            "mobilePayment": "휴대폰",
+            "ssgMoney": "SSG 머니",
+            "ssgBank": "SSG 은행계좌",
+            "cultureLand": "문화상품권",
+            "tmoneyPay": "티머니페이",
+            "request": "요청",
+            "requestCancel": "요청취소",
+            "requestComplete": "요청완료",
+            "issueComplete": "발급완료",
+            "requestFail": "요청실패",
+            "issueFail": "발급실패",
+            "paymentComplete": "결제완료",
+            "deliveryRegistration": "배송등록",
+            "deliveryComplete": "배송완료",
+            "purchaseConfirm": "구매확인",
+            "purchaseReject": "구매거절",
+            "refundProcessing": "환불처리",
+            "depositComplete": "지급완료",
+            "inProgress": "진행중",
+            "success": "성공",
+            "failure": "실패"
+        },
         "handWrittenIssuance": {
             "step1Title": "발행 정보 입력",
             "step2Title": "발행 금액 입력",