style: fix editor tab style

[bytemain]

Types

• 🐛 Bug Fixes
• 💄 Style Changes

Background or solution

当没有 tab 的时候 editor tabbar 会出现一个滚动条，并且 action 不能点击。

有滚动条是因为 inline-flex：

1. Why scrollHeight is bigger than offsetHeight, when used inline-block and DOCTYPE html?
2. What is the difference between offsetHeight and scrollHeight of an element in DOM?

action 不能点击是因为 zindex 问题

Changelog

Summary by CodeRabbit

• 新功能
  • 在编辑器设置中新增选项，允许在编辑器组为空时显示操作，提高用户体验。
• 样式
  • 修改编辑器组件的样式，优化布局和交互模型，增强可用性和性能。
  • 移除无效的样式注释，简化滚动条装饰样式。
• 文档
  • 在 EditorActions 组件中添加注释，指导开发者如何在集成场景中注销菜单项。

[railway-app]

🚅 Previously deployed to Railway in the core project. Environment has been deleted.

[coderabbitai]

Walkthrough

此次更改涉及多个文件的样式和功能更新，包括对编辑器组件布局的调整、滚动条样式的简化以及对菜单项的文档说明。具体而言，添加了新的配置选项以改善用户体验，移除了一些不再使用的样式声明，同时也更新了部分 CSS 属性的值。

Changes

文件路径	更改摘要
packages/editor/src/browser/editor-scrollbar/index.module.less	移除了注释中的 RGBA 颜色值，未影响滚动条样式的功能或视觉效果。
packages/editor/src/browser/editor.module.less	添加了 pointer-events: none; 属性，移除了 .kt_editor_tabs_scroll_wrapper 类，更新了 .kt_editor_tabs_content 的 display 属性，移除了嵌套类的 flex-shrink 和 flex-grow，更新了 .editorGroupHeader 的 z-index。
packages/editor/src/browser/tab.view.tsx	在 EditorActions 组件中添加了文档注释，指导如何在集成场景中注销菜单项，未改变现有功能或逻辑。
packages/startup/entry/web/render-app.tsx	在 getDefaultClientAppOpts 函数中添加了新配置选项 'editor.showActionWhenGroupEmpty': true，增强了编辑器的设置。

Sequence Diagram(s)

sequenceDiagram
    participant User
    participant Editor
    participant Menu

    User->>Editor: 打开编辑器
    Editor->>Menu: 显示菜单项
    Note right of Menu: 根据配置选项判断是否显示操作
    Menu-->>User: 显示操作（如果组为空）

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[bytemain]

/next

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 54.87%. Comparing base (5d95783) to head (4d39966).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #3970   +/-   ##
=======================================
  Coverage   54.87%   54.87%           
=======================================
  Files        1568     1568           
  Lines       95634    95634           
  Branches    19609    19601    -8     
=======================================
  Hits        52482    52482           
  Misses      35832    35832           
  Partials     7320     7320           

Flag	Coverage Δ
jsdom	50.34% <ø> (ø)
node	15.47% <ø> (ø)

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