chore: refactored test login.spec.js

[iamayushdas]

Please answer these questions before submitting a pull request, or your PR will get closed.

Why submit this pull request?

• Bugfix
• New feature provided
• Improve performance
• Backport patches
• Refactor

What changes will this PR take into?

Refactor Testcase for Frontend.

Related issues

related issue #1774

Checklist:

• Did you explain what problem does this PR solve? Or what new features have been added?
• Have you added corresponding test cases?
• Have you modified the corresponding document?
• Is this PR backward compatible? If it is not backward compatible, please discuss on the mailing list first

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[codecov-commenter]

Codecov Report

Merging #1881 (01fc99f) into master (b1e66a2) will increase coverage by 0.06%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #1881      +/-   ##
==========================================
+ Coverage   72.10%   72.17%   +0.06%     
==========================================
  Files         125      125              
  Lines        2947     2947              
  Branches      711      711              
==========================================
+ Hits         2125     2127       +2     
+ Misses        822      820       -2     

Flag	Coverage Δ
frontend-e2e-test	72.17% <ø> (+0.06%)	⬆️

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

Impacted Files	Coverage Δ
web/src/helpers.tsx	72.13% <0.00%> (+3.27%)	⬆️

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[iamayushdas]

@liuxiran can you retrigger CI , as i have checked it again, everything is working fine

[liuxiran]

@liuxiran can you retrigger CI , as i have checked it again, everything is working fine

Ok, retry CI. Mark the error: https://github.com/apache/apisix-dashboard/pull/1881/checks?check_run_id=2557014779, maybe it is an un stable case,need some time to fix it.