fix: Show all columns from dataset when transitioning from dashboard to Explore

[kgabryje]

SUMMARY

Due to the fact that dashboards use trimmed datasets (they only contain columns used by charts on that dashboard), we can't reuse them in Explore. This PR fixes that behaviour.

This PR is a "subset" of PR #20699 which fixes the same thing, but also introduces a code refactor. CI was failing on that PR, and since it's an urgent bug I decided to open a smaller PR to quickly fix the issue.

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 #20701 (589d1ef) into master (ec2eb3d) will decrease coverage by 0.01%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master   #20701      +/-   ##
==========================================
- Coverage   66.85%   66.84%   -0.02%     
==========================================
  Files        1751     1750       -1     
  Lines       65896    65888       -8     
  Branches     7017     7014       -3     
==========================================
- Hits        44052    44040      -12     
- Misses      20059    20063       +4     
  Partials     1785     1785              

Flag	Coverage Δ
javascript	51.94% <ø> (-0.03%)	⬇️

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

Impacted Files	Coverage Δ
...set-frontend/src/explore/actions/hydrateExplore.ts	57.69% <ø> (-2.31%)	⬇️
...set-frontend/src/explore/actions/exploreActions.ts	50.00% <0.00%> (-8.34%)	⬇️
...rset-frontend/src/hooks/apiResources/dashboards.ts	36.36% <0.00%> (ø)
...d/packages/superset-ui-chart-controls/src/types.ts	100.00% <0.00%> (ø)
.../explore/components/ExploreViewContainer/index.jsx	52.19% <0.00%> (ø)
...ters/FiltersConfigModal/FiltersConfigForm/utils.ts	82.35% <0.00%> (ø)
...frontend/src/explore/actions/datasourcesActions.ts
...rset-frontend/src/dashboard/actions/datasources.ts
...rontend/src/explore/reducers/datasourcesReducer.ts
... and 5 more

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update ec2eb3d...589d1ef. Read the comment docs.

[kgabryje]

Closing since the original PR was merged