test: improve e2e test stability and add terminal test case

[erha19]

Types

• ⏱ Tests

Background or solution

提升原有测试的稳定性，增加在终端创建文件后，文件树实时同步的测试案例

Changelog

improve e2e test stability and add terminal test case

[codecov]

Codecov Report

Base: 57.68% // Head: 57.69% // Increases project coverage by +0.01% 🎉

Coverage data is based on head (cf6ad3f) compared to base (ecb4569).
Patch has no changes to coverable lines.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1710      +/-   ##
==========================================
+ Coverage   57.68%   57.69%   +0.01%     
==========================================
  Files        1269     1274       +5     
  Lines       78979    79357     +378     
  Branches    16528    16618      +90     
==========================================
+ Hits        45559    45785     +226     
- Misses      30405    30545     +140     
- Partials     3015     3027      +12     

Flag	Coverage Δ
jsdom	52.54% <ø> (+0.01%)	⬆️
node	15.79% <ø> (-0.01%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
packages/monaco/src/browser/schema-registry.ts	68.88% <0.00%> (-2.23%)	⬇️
...erences/src/browser/preference-settings.service.ts	75.00% <0.00%> (-0.63%)	⬇️
...collaboration/src/browser/collaboration.service.ts	73.75% <0.00%> (-0.61%)	⬇️
...kages/theme/src/browser/workbench.theme.service.ts	70.76% <0.00%> (-0.59%)	⬇️
packages/electron-basic/src/browser/index.ts	73.26% <0.00%> (-0.48%)	⬇️
packages/core-browser/src/bootstrap/app.ts	64.68% <0.00%> (-0.10%)	⬇️
packages/core-common/src/index.ts	100.00% <0.00%> (ø)
packages/core-common/src/electron.ts	100.00% <0.00%> (ø)
packages/terminal-next/src/common/render.ts	100.00% <0.00%> (ø)
packages/core-browser/src/menu/next/menu-id.ts	100.00% <0.00%> (ø)
... and 17 more

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