chore: Adding some component dosctrings generated by GPT

[rusackas]

SUMMARY

Adds JSDoc-esque docstrings to the (randomly selected) DropDownButton and EmptyState components

BEFORE/AFTER SCREENSHOTS OR ANIMATED GIF

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 #24164 (c0709b2) into master (febc07a) will decrease coverage by 11.27%.
The diff coverage is 25.92%.

❗ Current head c0709b2 differs from pull request most recent head 0afd8d1. Consider uploading reports for the commit 0afd8d1 to get more accurate results

@@             Coverage Diff             @@
##           master   #24164       +/-   ##
===========================================
- Coverage   68.27%   57.00%   -11.27%     
===========================================
  Files        1952     1955        +3     
  Lines       75369    75379       +10     
  Branches     8210     8215        +5     
===========================================
- Hits        51457    42972     -8485     
- Misses      21806    30301     +8495     
  Partials     2106     2106               

Flag	Coverage Δ
hive	?
javascript	54.68% <25.92%> (-0.02%)	⬇️
mysql	?
postgres	?
sqlite	?

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

Impacted Files	Coverage Δ
...i-core/src/color/colorSchemes/sequential/common.ts	100.00% <ø> (ø)
...plugins/legacy-preset-chart-deckgl/src/factory.tsx	0.00% <ø> (ø)
...preset-chart-deckgl/src/layers/Heatmap/Heatmap.tsx	0.00% <0.00%> (ø)
...d/plugins/legacy-preset-chart-deckgl/src/preset.js	100.00% <ø> (ø)
...t-frontend/src/components/DropdownButton/index.tsx	85.00% <ø> (ø)
...erset-frontend/src/components/EmptyState/index.tsx	83.67% <ø> (ø)
superset/config.py	91.37% <ø> (-0.60%)	⬇️
superset/dashboards/permalink/api.py	58.82% <ø> (-30.07%)	⬇️
superset/dashboards/permalink/commands/base.py	87.50% <ø> (-12.50%)	⬇️
superset/dashboards/permalink/commands/create.py	50.00% <ø> (-42.86%)	⬇️
... and 12 more

... and 296 files with indirect coverage changes

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[rusackas]

Let's just... not do this.