fix: Revert "fix: keep placeholder in multivalue select when a value exists"

[etr2460]

Reverts #11181 to fix the issue reported here: #11181 (comment)

I'll wait until EOD before merging in case @eschutho can get a fix in.

to: @ktmud @eschutho @nytai

[codecov-io]

Codecov Report

Merging #11270 into master will decrease coverage by 0.01%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master   #11270      +/-   ##
==========================================
- Coverage   65.57%   65.56%   -0.02%     
==========================================
  Files         831      831              
  Lines       39523    39516       -7     
  Branches     3598     3593       -5     
==========================================
- Hits        25917    25907      -10     
- Misses      13497    13500       +3     
  Partials      109      109              

Flag	Coverage Δ
#cypress	55.89% <100.00%> (-0.08%)	⬇️
#javascript	62.62% <100.00%> (-0.05%)	⬇️
#python	60.77% <ø> (+0.01%)	⬆️

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

Impacted Files	Coverage Δ
...explore/components/controls/AdhocFilterControl.jsx	77.66% <ø> (ø)
...src/explore/components/controls/MetricsControl.jsx	89.69% <ø> (-0.19%)	⬇️
superset-frontend/src/components/Select/styles.tsx	98.14% <100.00%> (-0.13%)	⬇️
...ontend/src/dashboard/components/dnd/handleHover.js	75.00% <0.00%> (-25.00%)	⬇️
...ntend/src/dashboard/components/PropertiesModal.jsx	56.32% <0.00%> (-3.45%)	⬇️
...set-frontend/src/dashboard/util/getDropPosition.js	88.88% <0.00%> (-1.59%)	⬇️
superset/db_engine_specs/presto.py	82.07% <0.00%> (+0.64%)	⬆️

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[etr2460]

Merging after getting a response from Elizabeth. Thanks for the quick reviews!