Nested elasticity summary fix

[munrojm]

Ensure all elasticity data is properly nested in the summary doc

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (ebbe8d5) 91.36% compared to head (829c0b3) 91.35%.
Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #878      +/-   ##
==========================================
- Coverage   91.36%   91.35%   -0.02%     
==========================================
  Files         138      138              
  Lines       12748    12744       -4     
==========================================
- Hits        11647    11642       -5     
- Misses       1101     1102       +1     

Files	Coverage Δ
...api/routes/materials/elasticity/query_operators.py	100.00% <ø> (ø)
emmet-builders/emmet/builders/materials/summary.py	95.08% <100.00%> (-1.64%)	⬇️
emmet-core/emmet/core/summary.py	90.97% <100.00%> (-0.27%)	⬇️

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