test(core-p2p): increase coverage to 100%

[sebastijankuzner]

Summary

This PR increases core-p2p package to 100%.

Checklist

• Tests
• Ready to be merged

[codecov]

Codecov Report

Merging #3884 into develop will decrease coverage by 84.33%.
The diff coverage is 0.00%.

@@             Coverage Diff             @@
##           develop   #3884       +/-   ##
===========================================
- Coverage    94.22%   9.88%   -84.34%     
===========================================
  Files          616     617        +1     
  Lines        14421   14411       -10     
  Branches      1733    1723       -10     
===========================================
- Hits         13588    1425    -12163     
- Misses         616   12880    +12264     
+ Partials       217     106      -111     

Flag	Coverage Δ
#functional	?
#integration	9.88% <0.00%> (+<0.01%)	⬆️
#unit	?

Impacted Files	Coverage Δ
packages/core-p2p/src/hapi-nes/client.ts	0.00% <ø> (-3.61%)	⬇️
packages/core-p2p/src/hapi-nes/plugin.ts	0.00% <0.00%> (ø)
packages/core-p2p/src/hapi-nes/socket.ts	0.00% <ø> (-4.10%)	⬇️
packages/core-p2p/src/network-state.ts	0.00% <ø> (-96.97%)	⬇️
packages/core-p2p/src/peer-communicator.ts	0.00% <ø> (-94.78%)	⬇️
packages/core-p2p/src/peer-processor.ts	0.00% <ø> (-91.12%)	⬇️
packages/core-p2p/src/peer-verifier.ts	6.85% <ø> (-92.58%)	⬇️
packages/core/src/cli.ts	0.00% <0.00%> (-100.00%)	⬇️
packages/core-p2p/src/errors.ts	0.00% <0.00%> (-100.00%)	⬇️
packages/core-p2p/src/schemas.ts	0.00% <0.00%> (-100.00%)	⬇️
... and 589 more

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