fix: improve the Duplicate Route feature

[qian0817]

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

What changes will this PR take into?

clear the route name blank when duplicate route.

Related issues

fix/resolve #1703

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 #1833 (bac6de9) into master (2f3717f) will increase coverage by 0.02%.
The diff coverage is 100.00%.

❗ Current head bac6de9 differs from pull request most recent head fa5988d. Consider uploading reports for the commit fa5988d to get more accurate results

@@            Coverage Diff             @@
##           master    #1833      +/-   ##
==========================================
+ Coverage   72.07%   72.10%   +0.02%     
==========================================
  Files         125      125              
  Lines        2944     2947       +3     
  Branches      711      712       +1     
==========================================
+ Hits         2122     2125       +3     
  Misses        822      822              

Flag	Coverage Δ
frontend-e2e-test	72.10% <100.00%> (+0.02%)	⬆️

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

Impacted Files	Coverage Δ
web/src/pages/Route/Create.tsx	90.99% <100.00%> (+0.25%)	⬆️

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[juzhiyuan]

Good tip!