chore: missing IconType on Icons

[justinpark]

SUMMARY

This commit updates the IconType for Icons component to fix the type error.

BEFORE/AFTER SCREENSHOTS OR ANIMATED GIF

• Before:

• After:

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

[github-actions]

Storybook has completed and can be viewed at

[codecov]

Codecov Report

Merging #21218 (3f97500) into master (d41f44f) will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master   #21218   +/-   ##
=======================================
  Coverage   66.37%   66.37%           
=======================================
  Files        1781     1781           
  Lines       67929    67929           
  Branches     7255     7255           
=======================================
  Hits        45085    45085           
  Misses      20981    20981           
  Partials     1863     1863           

Flag	Coverage Δ
javascript	52.27% <100.00%> (ø)

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

Impacted Files	Coverage Δ
superset-frontend/src/components/Icons/index.tsx	100.00% <100.00%> (ø)

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