refactor: icon to icons for inderteminatecheckbox icon

[pkdotson]

SUMMARY

this pr refactors the indeterminatecheckbox icon to icons.

BEFORE/AFTER SCREENSHOTS OR ANIMATED GIF

before

after

TESTING INSTRUCTIONS

Go to the listviews and test out on the bulk select feature.

ADDITIONAL INFORMATION

• Has associated issue:
• 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 #15397 (0511e9e) into master (a7e1037) will decrease coverage by 0.02%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master   #15397      +/-   ##
==========================================
- Coverage   77.23%   77.21%   -0.03%     
==========================================
  Files         975      975              
  Lines       50595    50642      +47     
  Branches     6204     6228      +24     
==========================================
+ Hits        39079    39102      +23     
- Misses      11309    11329      +20     
- Partials      207      211       +4     

Flag	Coverage Δ
javascript	71.71% <100.00%> (-0.05%)	⬇️

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

Impacted Files	Coverage Δ
...end/src/components/IndeterminateCheckbox/index.tsx	100.00% <100.00%> (ø)
...d/src/explore/components/DatasourcePanel/index.tsx	81.33% <0.00%> (-9.74%)	⬇️
...rBar/CascadeFilters/CascadeFilterControl/index.tsx	90.00% <0.00%> (-2.31%)	⬇️
...tersConfigModal/FiltersConfigForm/ColumnSelect.tsx	95.91% <0.00%> (-1.46%)	⬇️
...ters/FiltersConfigModal/FiltersConfigForm/utils.ts	92.30% <0.00%> (-1.45%)	⬇️
...onfigModal/FiltersConfigForm/FiltersConfigForm.tsx	69.52% <0.00%> (-0.65%)	⬇️
superset-frontend/src/components/Select/Select.tsx	0.00% <0.00%> (ø)
...src/dashboard/components/DeleteComponentButton.jsx	100.00% <0.00%> (ø)
...src/dashboard/components/PropertiesModal/index.jsx	85.61% <0.00%> (ø)
...src/dashboard/components/gridComponents/Column.jsx	87.87% <0.00%> (ø)
... and 9 more

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[michael-s-molina]

Currently, the checkboxes are using the base primary color.

[rusackas]

/testenv up

[github-actions]

@rusackas Ephemeral environment spinning up at http://54.190.22.91:8080. Credentials are admin/admin. Please allow several minutes for bootstrapping and startup.

[github-actions]

Ephemeral environment shutdown and build artifacts deleted.