fix: Preserve filters from previous drillings in drill by

[kgabryje]

SUMMARY

When user performs multiple drilling, the filters should accumulate through the drilling stages. This PR fixes a bug which caused the filters to be overwritten with only the most recent filter

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 #23831 (3e2b427) into master (40ae074) will increase coverage by 0.00%.
The diff coverage is 88.23%.

❗ Current head 3e2b427 differs from pull request most recent head 35df33a. Consider uploading reports for the commit 35df33a to get more accurate results

@@           Coverage Diff           @@
##           master   #23831   +/-   ##
=======================================
  Coverage   67.99%   68.00%           
=======================================
  Files        1937     1937           
  Lines       74934    74942    +8     
  Branches     8138     8138           
=======================================
+ Hits        50954    50965   +11     
+ Misses      21895    21892    -3     
  Partials     2085     2085           

Flag	Coverage Δ
javascript	54.29% <87.50%> (+<0.01%)	⬆️
mysql	?

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Impacted Files	Coverage Δ
...d/src/SqlLab/components/SaveDatasetModal/index.tsx	50.00% <0.00%> (ø)
superset-frontend/src/SqlLab/actions/sqlLab.js	66.33% <50.00%> (-0.17%)	⬇️
...tend/src/components/Chart/DrillBy/DrillByModal.tsx	74.07% <100.00%> (+1.52%)	⬆️
...frontend/src/explore/actions/datasourcesActions.ts	100.00% <100.00%> (ø)
superset/views/core.py	75.11% <100.00%> (-0.21%)	⬇️

... and 8 files with indirect coverage changes

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