fix: revert handle null values in time-series table

[graceguo-supercat]

SUMMARY

#18039 caused an issue that table values are not corrected sorted in front-end. Revert it by now.

TESTING INSTRUCTIONS

CI

ADDITIONAL INFORMATION

• Has associated issue: fix: handle null values in time-series table #18039
• 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

[etr2460]

thanks for the quick revert!

[codecov]

Codecov Report

Merging #18684 (d692b8b) into master (a7d505d) will increase coverage by 0.00%.
The diff coverage is 0.00%.

@@           Coverage Diff           @@
##           master   #18684   +/-   ##
=======================================
  Coverage   66.25%   66.25%           
=======================================
  Files        1604     1604           
  Lines       62807    62806    -1     
  Branches     6333     6333           
=======================================
  Hits        41613    41613           
+ Misses      19542    19541    -1     
  Partials     1652     1652           

Flag	Coverage Δ
javascript	51.21% <0.00%> (+<0.01%)	⬆️

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

Impacted Files	Coverage Δ
...rontend/src/visualizations/TimeTable/TimeTable.jsx	0.00% <0.00%> (ø)

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