style: panel use default zIndex

[erha19]

Types

• 💄 Style Changes

Background or solution

🤖 Generated by Copilot at 5bd8b6c

• Removed zIndex property from tab panel styles to fix overlap bug (link)

移除无效的 zIndex 逻辑，这里会使得左右侧边栏的层级永远低于中间区域

修改后，所有视图布局均为同级，由内部组件自行控制层级

Changelog

🤖 Generated by Copilot at 5bd8b6c

Refactored the tab bar component to use React hooks and TypeScript and fixed a bug with tab panel styles. Removed the zIndex property from the panelVisible and panelInVisible styles in panel.view.tsx to prevent overlapping with other UI elements.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (2ee98e5) 57.69% compared to head (51d6a6a) 57.67%.
Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3170      +/-   ##
==========================================
- Coverage   57.69%   57.67%   -0.02%     
==========================================
  Files        1340     1340              
  Lines       84533    84535       +2     
  Branches    17583    17583              
==========================================
- Hits        48770    48759      -11     
- Misses      32502    32516      +14     
+ Partials     3261     3260       -1     

Flag	Coverage Δ
jsdom	52.59% <ø> (-0.02%)	⬇️
node	16.87% <ø> (+<0.01%)	⬆️

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