[BD-46] fix: revert PopperElement changes

[viktorrusakov]

Description

Changes in #2226 broke ModalPopup positioning.

Reverting them to fix it.

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[codecov]

Codecov Report

Patch coverage: 100.00% and no project coverage change.

Comparison is base (5b81cf4) 90.97% compared to head (a9a3393) 90.97%.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #2234   +/-   ##
=======================================
  Coverage   90.97%   90.97%           
=======================================
  Files         234      234           
  Lines        4123     4123           
  Branches      982      982           
=======================================
  Hits         3751     3751           
  Misses        365      365           
  Partials        7        7           

Impacted Files	Coverage Δ
src/Modal/PopperElement.jsx	100.00% <100.00%> (ø)

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🎉 This PR is included in version 20.32.2 🎉

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🎉 This PR is included in version 21.0.0-alpha.25 🎉

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