fix(sales): 统一调整日期序列化时区为GMT+8

zss

2026-08-19 a8f6033a0577f536c2c2489262aba8fdbbff3aa4

 src/main/java/com/ruoyi/purchase/dto/PaymentLedgerDto.java

@@ -8,6 +8,8 @@
    // 供应商名称
    private String supplierName;

    private Long supplierId;

    // 开始日期
    private String startDate;