cleanup(accrual): 删除orginPv死参数（3个方法签名+所有调用点）

源码实证orginPv在5/6个CalcDaily方法中是死参数（方法体不读取）：
- CalcDailyCompoundInterest: 删 decimal orginPv（3个调用点同步删）
- CalcDailyCompoundInterestByEod: 删（1个调用点+4个测试同步删）
- CalcDailySimpleInterestByEod: 删（1个调用点+2个测试同步删）

保留orginPv的方法（真实消费者）：
- CalcDailySimpleInterest: 差分公式 posiPrincipal - orginPv
- GetInterests/CalcUnwindInterest/InitSwapDealInterest: 转发链

SwapModule零回归(7基线/510通过)

UnitTestProject/Modules/SwapModule/Accrual/CompoundEodShadowTest.cs

@@ -92,7 +92,7 @@ namespace UnitTestProject.Modules.SwapModule.Accrual
             decimal oldInterest = 0, oldTd = 0;
             var svc = new StubSvc();
             svc.CalcDailyCompoundInterestByEod(preEod, EodDate, TradeDate, position,
-                Notional, Notional, flowEvent, AnnualDays, false, 0m, 1m, Notional,
+                Notional, Notional, flowEvent, AnnualDays, false, 0m, 1m,
                 ref oldInterest, ref oldTd);
 
             // 新方法
@@ -125,7 +125,7 @@ namespace UnitTestProject.Modules.SwapModule.Accrual
             decimal oldInterest = 0, oldTd = 0;
             var svc = new StubSvc();
             svc.CalcDailyCompoundInterestByEod(preEod, nonResetDate, TradeDate, position,
-                Notional, Notional, flowEvent, AnnualDays, false, 0m, 1m, Notional,
+                Notional, Notional, flowEvent, AnnualDays, false, 0m, 1m,
                 ref oldInterest, ref oldTd);
 
             // 新方法