chore: superset-ui/core code coverage

[zhaoyongjie]

SUMMARY

increase superset-ui/core code coverage

BEFORE/AFTER SCREENSHOTS OR ANIMATED GIF

TESTING INSTRUCTIONS

ADDITIONAL INFORMATION

• Has associated issue:
• Required feature flags:
• Changes UI
• Includes DB Migration (follow approval process in SIP-59)
  • Migration is atomic, supports rollback & is backwards-compatible
  • Confirm DB migration upgrade and downgrade tested
  • Runtime estimates and downtime expectations provided
• Introduces new feature or API
• Removes existing feature or API

[codecov]

Codecov Report

Merging #20304 (c2cb305) into master (d3670f1) will not change coverage.
The diff coverage is n/a.

❗ Current head c2cb305 differs from pull request most recent head 27c3a34. Consider uploading reports for the commit 27c3a34 to get more accurate results

@@           Coverage Diff           @@
##           master   #20304   +/-   ##
=======================================
  Coverage   66.61%   66.61%           
=======================================
  Files        1733     1733           
  Lines       64953    64953           
  Branches     6858     6858           
=======================================
  Hits        43268    43268           
  Misses      19929    19929           
  Partials     1756     1756           

Flag	Coverage Δ
javascript	51.51% <ø> (ø)

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[stephenLYZ]

LGTM