perf(word-cloud): reduce render to improve performance

[stephenLYZ]

SUMMARY

Currently, the cloud map will re-render multiple times in the dashboard. The reason is that when determining whether to update, the object is judged using the !== operator.

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 #21504 (dea85e0) into master (6e8cad3) will increase coverage by 0.05%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##           master   #21504      +/-   ##
==========================================
+ Coverage   66.59%   66.64%   +0.05%     
==========================================
  Files        1791     1793       +2     
  Lines       68554    68450     -104     
  Branches     7319     7275      -44     
==========================================
- Hits        45653    45620      -33     
+ Misses      21008    20968      -40     
+ Partials     1893     1862      -31     

Flag	Coverage Δ
javascript	52.83% <0.00%> (+0.06%)	⬆️

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

Impacted Files	Coverage Δ
...ns/plugin-chart-word-cloud/src/chart/WordCloud.tsx	0.00% <0.00%> (ø)
.../legacy-plugin-chart-histogram/src/controlPanel.ts	40.00% <0.00%> (-10.00%)	⬇️
superset-frontend/src/hooks/apiResources/tables.ts	80.00% <0.00%> (-1.25%)	⬇️
...gin-chart-echarts/src/Timeseries/transformProps.ts	52.38% <0.00%> (-1.20%)	⬇️
...rontend/src/visualizations/FilterBox/FilterBox.jsx	49.61% <0.00%> (ø)
.../src/dashboard/components/RefreshIntervalModal.tsx	80.00% <0.00%> (ø)
.../plugin-chart-echarts/src/Timeseries/buildQuery.ts	66.66% <0.00%> (ø)
.../superset-ui-core/src/query/normalizeTimeColumn.ts	100.00% <0.00%> (ø)
...e/components/controls/SelectAsyncControl/index.tsx	54.83% <0.00%> (ø)
...et-ui-chart-controls/src/operators/sortOperator.ts	100.00% <0.00%> (ø)
... and 31 more

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[zhaoyongjie]

LGTM