Remove lineHeight and use align-content to vertically align items

[amanmahajan7]

https://twitter.com/yisibl/status/1734511505356525687
https://rachelandrew.co.uk/archives/2023/12/19/align-content-in-block-layout/

Works great

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 98.16%. Comparing base (5bcf9d2) to head (fb2757e).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3415      +/-   ##
==========================================
- Coverage   98.21%   98.16%   -0.05%     
==========================================
  Files          47       47              
  Lines        5087     5072      -15     
  Branches      724      720       -4     
==========================================
- Hits         4996     4979      -17     
- Misses         91       93       +2     

Files	Coverage Δ
src/DataGrid.tsx	99.34% <ø> (-0.01%)	⬇️
src/GroupRow.tsx	100.00% <100.00%> (ø)
src/HeaderRow.tsx	100.00% <ø> (ø)
src/Row.tsx	100.00% <100.00%> (ø)
src/SummaryRow.tsx	100.00% <ø> (ø)
src/style/cell.ts	100.00% <100.00%> (ø)
src/style/row.ts	100.00% <ø> (ø)
src/utils/styleUtils.ts	100.00% <100.00%> (ø)

... and 1 file with indirect coverage changes