fix: timeout should be an integer

[betodealmeida]

SUMMARY

The cache timeout should be an integer, but we're setting it to None when it's not specified. Instead, we should use 0 for no expiration.

BEFORE/AFTER SCREENSHOTS OR ANIMATED GIF

N/A

TESTING INSTRUCTIONS

N/A

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 #23924 (79a0963) into master (db9a9cf) will increase coverage by 0.08%.
The diff coverage is 87.50%.

❗ Current head 79a0963 differs from pull request most recent head 01ef832. Consider uploading reports for the commit 01ef832 to get more accurate results

@@            Coverage Diff             @@
##           master   #23924      +/-   ##
==========================================
+ Coverage   68.02%   68.11%   +0.08%     
==========================================
  Files        1938     1940       +2     
  Lines       74997    75009      +12     
  Branches     8152     8152              
==========================================
+ Hits        51015    51090      +75     
+ Misses      21900    21836      -64     
- Partials     2082     2083       +1     

Flag	Coverage Δ
hive	53.02% <64.28%> (+<0.01%)	⬆️
mysql	78.81% <100.00%> (+<0.01%)	⬆️
postgres	78.89% <100.00%> (?)
presto	52.93% <64.28%> (+<0.01%)	⬆️
python	82.68% <100.00%> (+0.17%)	⬆️
sqlite	77.40% <100.00%> (?)
unit	52.82% <71.42%> (+<0.01%)	⬆️

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

Impacted Files	Coverage Δ
...frontend/src/SqlLab/components/SqlEditor/index.jsx	58.52% <ø> (+0.23%)	⬆️
...set-frontend/src/components/Select/AsyncSelect.tsx	88.46% <ø> (ø)
superset-frontend/src/components/Select/Select.tsx	90.41% <ø> (ø)
...nd/src/explore/components/RunQueryButton/index.tsx	100.00% <ø> (ø)
superset-frontend/src/preamble.ts	0.00% <0.00%> (ø)
superset-frontend/src/setup/setupFormatters.ts	0.00% <ø> (ø)
superset-frontend/src/types/bootstrapTypes.ts	100.00% <ø> (ø)
superset/cli/native_filters.py	0.00% <ø> (ø)
superset/dashboards/api.py	92.54% <ø> (+0.43%)	⬆️
superset/views/base.py	76.87% <ø> (ø)
... and 11 more

... and 22 files with indirect coverage changes

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