fix(plugin-chart-table): Fix display of column config in table chart

[kgabryje]

SUMMARY

Table chart's "Customize columns" control had type icon and column name in separate columns. This PR fixes that bug.

BEFORE/AFTER SCREENSHOTS OR ANIMATED GIF

Before:

After:

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 #19806 (412ce92) into master (5e468f7) will increase coverage by 0.00%.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master   #19806   +/-   ##
=======================================
  Coverage   66.54%   66.54%           
=======================================
  Files        1692     1692           
  Lines       64775    64779    +4     
  Branches     6661     6661           
=======================================
+ Hits        43103    43108    +5     
+ Misses      19972    19971    -1     
  Partials     1700     1700           

Flag	Coverage Δ
javascript	51.24% <ø> (+<0.01%)	⬆️

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Impacted Files	Coverage Δ
...omponents/ColumnConfigControl/ColumnConfigItem.tsx	0.00% <ø> (ø)
.../src/explore/components/controls/SliderControl.tsx	0.00% <0.00%> (ø)
...in-chart-echarts/src/MixedTimeseries/buildQuery.ts	0.00% <0.00%> (ø)
...CRUD/alert/components/AlertReportCronScheduler.tsx	87.50% <0.00%> (+10.57%)	⬆️
...-frontend/src/components/CronPicker/CronPicker.tsx	100.00% <0.00%> (+14.28%)	⬆️

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