fix: Dataset timeout

[geido]

SUMMARY

Fixes an issue for which the datasets were timing out in certain cases

BEFORE/AFTER SCREENSHOTS OR ANIMATED GIF

N.A.

TESTING INSTRUCTIONS

1. Open Explore with a large dataset, such as flights
2. The requests should not timeout

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 #21516 (3d2fabc) into master (94a724e) will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master   #21516   +/-   ##
=======================================
  Coverage   66.67%   66.67%           
=======================================
  Files        1793     1793           
  Lines       68493    68494    +1     
  Branches     7275     7275           
=======================================
+ Hits        45665    45666    +1     
  Misses      20966    20966           
  Partials     1862     1862           

Flag	Coverage Δ
hive	53.08% <100.00%> (+<0.01%)	⬆️
mysql	78.20% <100.00%> (+<0.01%)	⬆️
postgres	78.27% <100.00%> (+<0.01%)	⬆️
presto	52.98% <100.00%> (+<0.01%)	⬆️
python	81.41% <100.00%> (+<0.01%)	⬆️
sqlite	76.76% <100.00%> (+<0.01%)	⬆️
unit	51.06% <100.00%> (+<0.01%)	⬆️

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

Impacted Files	Coverage Δ
superset/models/core.py	90.21% <100.00%> (+0.02%)	⬆️
...ns/plugin-chart-word-cloud/src/chart/WordCloud.tsx	0.00% <0.00%> (ø)

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[betodealmeida]

Thanks!