Update position to vertical-align for copy button

[AllForNothing]

Fixes #17906

before:

after:

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[codecov]

Codecov Report

Merging #18563 (e323dc2) into main (c7cbf0f) will increase coverage by 0.03%.
The diff coverage is n/a.

❗ Current head e323dc2 differs from pull request most recent head aace5ba. Consider uploading reports for the commit aace5ba to get more accurate results

@@            Coverage Diff             @@
##             main   #18563      +/-   ##
==========================================
+ Coverage   67.37%   67.41%   +0.03%     
==========================================
  Files         984      984              
  Lines      107010   107010              
  Branches     2670     2670              
==========================================
+ Hits        72100    72137      +37     
+ Misses      31033    30995      -38     
- Partials     3877     3878       +1     

Flag	Coverage Δ
unittests	67.41% <ø> (+0.03%)	⬆️

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see 7 files with indirect coverage changes