fix: update menu sidebar

[Ylikj]

Change the style of the last icon in the menu

Resolve the bug raised by #1335

[netlify]

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[codecov-commenter]

Codecov Report

Merging #2051 (596941c) into master (c3ea687) will increase coverage by 0.04%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #2051      +/-   ##
==========================================
+ Coverage   65.88%   65.92%   +0.04%     
==========================================
  Files         121      121              
  Lines        3210     3211       +1     
  Branches      778      779       +1     
==========================================
+ Hits         2115     2117       +2     
+ Misses       1095     1094       -1     

Flag	Coverage Δ
frontend-e2e-test	65.92% <ø> (+0.04%)	⬆️

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Impacted Files	Coverage Δ
web/src/helpers.tsx	73.77% <ø> (+1.63%)	⬆️
web/src/app.tsx	100.00% <0.00%> (ø)

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[liuxiran]

merged, thanks for your contribution @Ylikj