Builder chunking fixes

[munrojm]

This PR fixes chunking on remaining non-map builders. is_magnetic fix is also added to summary builder.

[codecov-commenter]

Codecov Report

Merging #287 (5f8ace2) into main (13b8746) will decrease coverage by 0.34%.
The diff coverage is 54.54%.

@@            Coverage Diff             @@
##             main     #287      +/-   ##
==========================================
- Coverage   89.48%   89.13%   -0.35%     
==========================================
  Files          45       45              
  Lines        2367     2383      +16     
==========================================
+ Hits         2118     2124       +6     
- Misses        249      259      +10     

Impacted Files	Coverage Δ
...et-builders/emmet/builders/materials/dielectric.py	88.00% <50.00%> (-6.03%)	⬇️
...builders/emmet/builders/materials/piezoelectric.py	88.15% <54.54%> (-5.96%)	⬇️
emmet-core/emmet/core/summary.py	88.39% <100.00%> (ø)

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