fix(legacy-plugin-chart-sunburst): chart broken when secondary metric is removed

[stephenLYZ]

SUMMARY

This PR fixes the problem that sunburst broken when secondary metric is removed

BEFORE/AFTER SCREENSHOTS OR ANIMATED GIF

before

2022-05-31.12.03.50.mov

after

2022-05-31.12.13.12.mov

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 #20223 (76d1a90) into master (c8fe518) will not change coverage.
The diff coverage is 0.00%.

❗ Current head 76d1a90 differs from pull request most recent head b5e0d29. Consider uploading reports for the commit b5e0d29 to get more accurate results

@@           Coverage Diff           @@
##           master   #20223   +/-   ##
=======================================
  Coverage   66.47%   66.47%           
=======================================
  Files        1727     1727           
  Lines       64724    64724           
  Branches     6822     6822           
=======================================
  Hits        43024    43024           
  Misses      19969    19969           
  Partials     1731     1731           

Flag	Coverage Δ
javascript	51.34% <0.00%> (ø)

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

Impacted Files	Coverage Δ
...ontrols/DndColumnSelectControl/DndMetricSelect.tsx	60.74% <0.00%> (ø)

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[zhaoyongjie]

LGTM! thanks for the fix.