fix: show theme quick picker after theme extension installed

[PerfectPan]

Types

• 🎉 New Features
• 🐛 Bug Fixes
• 📚 Documentation Changes
• 💄 Code Style Changes
• 💄 Style Changes
• 🪚 Refactors
• 🚀 Performance Improvements
• 🏗️ Build System
• ⏱ Tests
• 🧹 Chores
• Other Changes

Background or solution

fix #1232

Changelog

show theme quick picker after theme extension installed

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[erha19]

验证通过，功能与预期一致

[codecov]

Codecov Report

Patch coverage: 50.00% and project coverage change: +5.00 🎉

Comparison is base (4c0ec0a) 52.79% compared to head (b431db8) 57.80%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2398      +/-   ##
==========================================
+ Coverage   52.79%   57.80%   +5.00%     
==========================================
  Files        1323     1323              
  Lines       83295    83328      +33     
  Branches    17348    17362      +14     
==========================================
+ Hits        43979    48170    +4191     
+ Misses      35687    31945    -3742     
+ Partials     3629     3213     -416     

Flag	Coverage Δ
jsdom	52.83% <50.00%> (+0.03%)	⬆️
node	16.69% <0.00%> (?)

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

Impacted Files	Coverage Δ
...s/extension/src/browser/vscode/contributes/icon.ts	30.23% <ø> (ø)
.../extension/src/browser/vscode/contributes/theme.ts	100.00% <ø> (ø)
packages/i18n/src/common/en-US.lang.ts	100.00% <ø> (ø)
packages/i18n/src/common/zh-CN.lang.ts	100.00% <ø> (ø)
packages/theme/src/common/theme.service.ts	67.94% <ø> (ø)
...ension/src/browser/extension-management.service.ts	43.67% <42.85%> (-0.92%)	⬇️
packages/theme/src/browser/icon.service.ts	76.49% <100.00%> (ø)
...kages/theme/src/browser/workbench.theme.service.ts	71.96% <100.00%> (ø)

... and 120 files with indirect coverage changes

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[erha19]

LGTM

[erha19]

@PerfectPan 感谢你的贡献，后续代码将会在 v2.23.0 版本中发布