fix(graph): limit graph label count for long ctfs

[ginkoid]

No description provided.

[codecov]

Codecov Report

Merging #547 (a2bad1d) into master (1dd16ff) will increase coverage by 0.35%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #547      +/-   ##
==========================================
+ Coverage   60.04%   60.40%   +0.35%     
==========================================
  Files          87       87              
  Lines        1389     1389              
  Branches       57       57              
==========================================
+ Hits          834      839       +5     
+ Misses        530      525       -5     
  Partials       25       25              

Impacted Files	Coverage Δ
server/leaderboard/calculate.js	59.72% <0.00%> (+6.94%)	⬆️

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[DarinMao]

how much we gotta pay you to use a graph library