Fix core nesting

[munrojm]

No description provided.

[codecov-commenter]

Codecov Report

Patch coverage: 96.77% and project coverage change: -0.01 ⚠️

Comparison is base (4f06660) 90.69% compared to head (6129b1a) 90.69%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #709      +/-   ##
==========================================
- Coverage   90.69%   90.69%   -0.01%     
==========================================
  Files         148      148              
  Lines       11419    11418       -1     
==========================================
- Hits        10356    10355       -1     
  Misses       1063     1063              

Impacted Files	Coverage Δ
emmet-core/emmet/core/summary.py	91.11% <96.77%> (-0.07%)	⬇️

... and 2 files with indirect coverage changes

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