chore: Enhance Select component

[geido]

SUMMARY

Improves the Select component UI/UX.

• Fixes some bugs of the Select component related to searching and selection
• Simplifies the Select API for the async non-paginated version

All the kudos for these latest changes go to @michael-s-molina. I am opening up this PR on his behalf to make async work easier.

TESTING INSTRUCTIONS

Testing is only possible in an isolated state with Storybook.

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 #15550 (c82c676) into master (0af5a3d) will increase coverage by 0.01%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##           master   #15550      +/-   ##
==========================================
+ Coverage   76.93%   76.95%   +0.01%     
==========================================
  Files         976      976              
  Lines       51320    51311       -9     
  Branches     6912     6907       -5     
==========================================
  Hits        39485    39485              
+ Misses      11616    11607       -9     
  Partials      219      219              

Flag	Coverage Δ
javascript	71.41% <0.00%> (+0.02%)	⬆️

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

Impacted Files	Coverage Δ
superset-frontend/src/components/Select/Select.tsx	0.00% <0.00%> (ø)

---

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 0af5a3d...c82c676. Read the comment docs.