style: format code with Prettier and StandardJS

[deepsource-autofix]

This commit fixes the style issues introduced in edc95a2 according to the output
from Prettier and StandardJS.

Details: None

[vercel]

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Name	Status	Preview	Comments	Updated (UTC)
pro-react-admin	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Aug 2, 2025 7:21am

[what-the-diff]

PR 摘要

• 更新了 OrgChartDemo 组件

  我们对 OrgChartDemo 组件进行了改进，使其在 OrgChart 中使用 isRoot prop 的简写形式。

• 修改了 OrgChart 组件

  我们对 OrgChart 组件进行了些许修改，以使用自闭合标签，主要用于以下几个元素：

  • 垂直向下的线条（<div className={styles.verticalLineDown} />）
  • 水平线条（<div style=... />）
  • 垂直向上的线条（<div className={styles.verticalLineUp} />)

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud