[Bug] 滑动输入条，选择步数，和默认值，预览数目展示有问题

[Henry129999]

Have you read the Contributing Guidelines on issues?

• I have read the Contributing Guidelines on issues.

Prerequisites

• I'm using the latest version of DripForm、DripFormTheme.
• I have read the console error message carefully (if applicable).

Description

滑动输入条，选择步数，和默认值，预览数目展示有问题

Steps to reproduce

滑动输入条，选择步数，和默认值，预览数目展示有问题

Current behavior

滑动输入条，选择步数，和默认值，预览数目展示有问题

Expected behavior

滑动输入条，选择步数，和默认值，预览数目展示有问题

Your environment

• DripForm version used:
• DripFormTheme used:
• DripFormTheme version used:

Reproducible demo

No response

Self-service

• I'd be willing to fix this bug myself.

[mengshang918]

非drip-form 问题，antd主题测试结果相同，参考codeSandbox例子。
我理解，step是4，默认值应该是4的倍数。