feat(settlement): 优化回水分摊明细展示及分组逻辑

- 新增多语言支持，补充回水分摊相关字段翻译
- 优化回水分摊数据汇总逻辑，合并相同参与方的数据
- 增加分摊占比显示，提升明细信息直观性
- 实现按注单分组的回水明细展开与收起功能
- 使用表格展示汇总数据，提升界面可读性和美观度
- 调整样式和交互细节，增强用户体验

src/i18n/locales/en/settlementCenter.json

@@ -270,6 +270,13 @@
     "recordReceiptFrom": "Record receipt ({{payer}} → {{payee}})",
     "recordPayoutTo": "Record payout ({{payer}} → {{payee}})",
     "rebateAllocationsHint": "How rebate is allocated across agent tiers.",
+    "rebateAllocParticipant": "Participant",
+    "rebateAllocRate": "Share",
+    "rebateAllocAmount": "Allocated",
+    "rebateAllocTotal": "Total",
+    "rebateAllocTicket": "Ticket",
+    "showRawRebateAllocations": "Show per-ticket detail ({{count}})",
+    "hideRawRebateAllocations": "Hide per-ticket detail",
     "payment": "Payment",
     "flowHint": {
       "playerPayAgent": "Player should settle with the direct agent",