fix: Copy height in .vstack() for empty dataframes (#19641)

[letkemann]

Fixes #19641

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 79.92%. Comparing base (0f64785) to head (c1d485e).
Report is 3 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #19642      +/-   ##
==========================================
- Coverage   79.92%   79.92%   -0.01%     
==========================================
  Files        1536     1536              
  Lines      211686   211700      +14     
  Branches     2445     2445              
==========================================
+ Hits       169192   169201       +9     
- Misses      41939    41944       +5     
  Partials      555      555              

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[ritchie46]

Thanks!