解决的单据保存的bug：如果存在多账户结算需要将原账户的id置空

jshERP-boot/src/main/java/com/jsh/erp/datasource/mappers/DepotHeadMapperEx.java

@@ -235,4 +235,7 @@ public interface DepotHeadMapperEx {
     BigDecimal getFinishDepositByNumberExceptCurrent(
             @Param("linkNumber") String linkNumber,
             @Param("number") String number);
+
+    void setAccountIdToNull(
+            @Param("id") Long id);
 }