precompiles: Investigate missing BLS test cases

[chfast]

No description provided.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 94.19%. Comparing base (7961b60) to head (7d24f37).

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1015   +/-   ##
=======================================
  Coverage   94.19%   94.19%           
=======================================
  Files         149      149           
  Lines       15888    15896    +8     
=======================================
+ Hits        14965    14973    +8     
  Misses        923      923           

Flag	Coverage Δ
eof_execution_spec_tests	17.24% <0.00%> (-0.01%)	⬇️
ethereum_tests	27.31% <0.00%> (-0.02%)	⬇️
ethereum_tests_silkpre	19.13% <0.00%> (-0.01%)	⬇️
execution_spec_tests	20.46% <100.00%> (+0.04%)	⬆️
unittests	88.95% <81.81%> (-0.01%)	⬇️

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Files with missing lines	Coverage Δ
lib/evmone_precompiles/bls.cpp	100.00% <100.00%> (ø)
test/state/precompiles.cpp	98.92% <ø> (ø)