fix: improvements to keyboard navigation

[reginapizza]

Related to #5466 (doesn't fix it entirely but works towards solving it)
This would allow the user to tab through the nav bar and changes the login button to an actual button that the user can tab to.

Also incorporates changes in argo-ui including my PR for more visual focus.

Checklist:

• Either (a) I've created an enhancement proposal and discussed it with the community, (b) this is a bug fix, or (c) this does not need to be in the release notes.
• The title of the PR states what changed and the related issues number (used for the release note).
• I've included "Closes [ISSUE #]" or "Fixes [ISSUE #]" in the description to automatically close the associated issue.
• I've updated both the CLI and UI to expose my feature, or I plan to submit a second PR with them.
• Does this PR require documentation updates?
• I've updated documentation as required by this PR.
• Optional. My organization is added to USERS.md.
• I have signed off all my commits as required by DCO
• I have written unit and/or e2e tests for my change. PRs without these are unlikely to be merged.
• My build is green (troubleshooting builds).

demo-focus-keyboard-nav.mp4

[codecov]

Codecov Report

Merging #5825 (759bcc6) into master (2f785cd) will decrease coverage by 0.02%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #5825      +/-   ##
==========================================
- Coverage   40.91%   40.89%   -0.03%     
==========================================
  Files         147      147              
  Lines       19620    19633      +13     
==========================================
+ Hits         8027     8028       +1     
- Misses      10489    10500      +11     
- Partials     1104     1105       +1     

Impacted Files	Coverage Δ
util/helm/helm.go	55.71% <0.00%> (-9.81%)	⬇️
controller/state.go	69.15% <0.00%> (-0.18%)	⬇️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 2f785cd...759bcc6. Read the comment docs.

[alexmt]

Sorry for the delay in review.
I think package.json and yarn.lock files were added by mistake .

Please remove them and run yarn add git+https://github.com/argoproj/argo-ui.git in ui directory, not the root directory.

[reginapizza]

@alexmt my bad, I've fixed it now!

[alexmt]

Thank you!