chore: refactored test create-route-with-proxy-mirror-form.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 #1866 (4e7eb3e) into master (b1e66a2) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #1866   +/-   ##
=======================================
  Coverage   72.10%   72.10%           
=======================================
  Files         125      125           
  Lines        2947     2947           
  Branches      711      711           
=======================================
  Hits         2125     2125           
  Misses        822      822           

Flag	Coverage Δ
frontend-e2e-test	72.10% <ø> (ø)

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