Fix Sidebar external links

[buberdds]

Follows to #821

• for regular anchors, external links we cannot use react-router navigation. Example link from prod https://wallet.oasisprotocol.org/https://github.com/oasisprotocol/oasis-wallet-web

[github-actions]

MegaLinter status: ✅ SUCCESS

Descriptor	Linter	Files	Fixed	Errors	Elapsed time
✅ EDITORCONFIG	editorconfig-checker	2		0	0.01s
✅ GIT	git_diff	yes		no	0.01s
✅ TSX	eslint	1	0	0	5.32s

See errors details in artifact MegaLinter reports on CI Job page
Set VALIDATE_ALL_CODEBASE: true in mega-linter.yml to validate all sources, not only the diff

[codecov]

Codecov Report

Merging #903 (7ead841) into master (1bbf579) will increase coverage by 0.00%.
The diff coverage is 100.00%.

❗ Current head 7ead841 differs from pull request most recent head 4266ed2. Consider uploading reports for the commit 4266ed2 to get more accurate results

@@           Coverage Diff           @@
##           master     #903   +/-   ##
=======================================
  Coverage   87.53%   87.53%           
=======================================
  Files          98       98           
  Lines        1620     1621    +1     
  Branches      347      348    +1     
=======================================
+ Hits         1418     1419    +1     
  Misses        202      202           

Flag	Coverage Δ
cypress	60.28% <100.00%> (+0.02%)	⬆️
jest	73.85% <100.00%> (+0.01%)	⬆️

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

Impacted Files	Coverage Δ
src/app/components/Sidebar/index.tsx	89.18% <100.00%> (+0.14%)	⬆️

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[lukaw3d]

oh, that was terrible

[lukaw3d]

oops github link is green now: