refactor: replace labelPlacement with titlePlacement

[zombieJ]

follow ant-design/ant-design#53328 to move to titlePlacement.

Summary by CodeRabbit

• 文档
  • 更新了 Steps 组件的 API 文档，将属性名从 labelPlacement 更正为 titlePlacement。
• 新特性
  • Steps 组件的属性名由 labelPlacement 改为 titlePlacement，用于控制步骤标题的排列方式。
• 测试
  • 测试用例同步更新为使用 titlePlacement 属性，确保与组件属性一致。

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Name	Status	Preview	Comments	Updated (UTC)
steps	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	May 20, 2025 9:03am

[coderabbitai]

Walkthrough

本次更改将 Steps 组件相关的 prop 名称从 labelPlacement 统一更正为 titlePlacement，涉及文档、示例、组件实现和测试用例。原有的类型、默认值及逻辑未变，仅变量和属性名发生了调整，以准确反映 prop 的实际用途。

Changes

文件/路径	变更摘要
README.md	将 Steps 组件 API 文档中的 labelPlacement 更正为 titlePlacement。
docs/examples/alternativeLabel.jsx	示例代码中 prop 名称由 labelPlacement 改为 titlePlacement。
src/Steps.tsx	StepsProps 接口、默认参数、内部变量及 CSS 类名相关的 labelPlacement 全部更名为 titlePlacement，逻辑不变。
tests/index.test.tsx	测试用例中 prop 及测试名由 labelPlacement 改为 titlePlacement，测试逻辑不变。

Poem

🐇
步骤标题换新装，
labelPlacement 说再见，
titlePlacement 站前方。
文档示例齐更新，
测试验证更名忙。
兔子挥笔庆一场！

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docs/examples/alternativeLabel.jsx

Oops! Something went wrong! :(

ESLint: 8.57.1

ESLint couldn't find the config "prettier" to extend from. Please check that the name of the config is correct.

The config "prettier" was referenced from the config file in "/.eslintrc.js".

If you still have problems, please stop by https://eslint.org/chat/help to chat with the team.

src/Steps.tsx

Oops! Something went wrong! :(

ESLint: 8.57.1

ESLint couldn't find the config "prettier" to extend from. Please check that the name of the config is correct.

The config "prettier" was referenced from the config file in "/.eslintrc.js".

If you still have problems, please stop by https://eslint.org/chat/help to chat with the team.

tests/index.test.tsx

Oops! Something went wrong! :(

ESLint: 8.57.1

ESLint couldn't find the config "prettier" to extend from. Please check that the name of the config is correct.

The config "prettier" was referenced from the config file in "/.eslintrc.js".

If you still have problems, please stop by https://eslint.org/chat/help to chat with the team.

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📜 Recent review details

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Review profile: CHILL
Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between cf45dbb and a9360d8.

⛔ Files ignored due to path filters (1)

• tests/__snapshots__/index.test.tsx.snap is excluded by !**/*.snap

📒 Files selected for processing (4)

• README.md (1 hunks)
• docs/examples/alternativeLabel.jsx (1 hunks)
• src/Steps.tsx (3 hunks)
• tests/index.test.tsx (1 hunks)

🔇 Additional comments (7)

src/Steps.tsx (4)

58-58: 命名更改充分反映了属性的实际用途

将 labelPlacement 更改为 titlePlacement 更准确地表达了此属性的用途，因为它控制的是步骤标题的布局方式，而不是标签。这种更改使代码更加清晰和直观。

---

85-85: 参数解构中的默认值已正确更新

函数参数解构中的默认值保持为 'horizontal'，与原来的行为一致，确保了API兼容性和预期行为。

---

105-106: 内部变量命名已同步更新

内部变量 mergeTitlePlacement 的命名和逻辑已与新的属性名称保持一致，同时保留了原有的条件判断逻辑，确保功能不变。

---

112-112: CSS类名已正确更新

CSS类名从 -label- 更改为 -title-，与属性名称变更保持一致，确保样式选择器正常工作。这种统一的命名方式有助于维护代码的一致性。

README.md (1)

87-87: 文档中的属性名称已正确更新

README文档中的属性名称已从 labelPlacement 更新为 titlePlacement，保持了属性的类型和描述不变，确保用户文档与代码实现保持一致。

docs/examples/alternativeLabel.jsx (1)

11-11: 示例代码中的属性名称已正确更新

示例代码中的属性名称已从 labelPlacement="vertical" 更新为 titlePlacement="vertical"，确保示例能正确展示组件的用法。

tests/index.test.tsx (1)

55-57: 测试用例已同步更新属性名称

测试用例名称和测试内容已从 labelPlacement 更新为 titlePlacement，保证测试用例能正确验证组件的行为。这确保了代码修改后测试覆盖率不受影响。

✨ Finishing Touches

• 📝 Generate Docstrings

🧪 Generate Unit Tests

• Create PR with Unit Tests
• Commit Unit Tests in branch titlePlacement
• Post Copyable Unit Tests in Comment

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 100.00%. Comparing base (cf45dbb) to head (a9360d8).

Additional details and impacted files

@@            Coverage Diff            @@
##            master      #373   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            3         3           
  Lines           73        73           
  Branches        31        30    -1     
=========================================
  Hits            73        73           

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