Small speed related changes

[munrojm]

• Ensure summary endpoint hint is ordered properly
• Max length for element list query added

[codecov-commenter]

Codecov Report

Attention: 2 lines in your changes are missing coverage. Please review.

Comparison is base (2e2ae4d) 90.84% compared to head (8f42220) 89.19%.

Files	Patch %	Lines
.../emmet/api/routes/materials/summary/hint_scheme.py	77.77%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #910      +/-   ##
==========================================
- Coverage   90.84%   89.19%   -1.66%     
==========================================
  Files         137      107      -30     
  Lines       12826     9678    -3148     
==========================================
- Hits        11652     8632    -3020     
+ Misses       1174     1046     -128     

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