Fix flaky lockup test

[vtleonardo]

This test is failing sometimes depending on the gas used and at which point it gets executed. The right way to check the values that can have possible rounding errors is by subtracting one from another and checking if the error falls into an acceptable range.

[codecov]

Codecov Report

Base: 18.12% // Head: 54.36% // Increases project coverage by +36.23% 🎉

Coverage data is based on head (cb498a0) compared to base (455eb1a).
Patch has no changes to coverable lines.

Additional details and impacted files

@@             Coverage Diff             @@
##             main     #524       +/-   ##
===========================================
+ Coverage   18.12%   54.36%   +36.23%     
===========================================
  Files         288      369       +81     
  Lines       27741    42708    +14967     
  Branches      599      599               
===========================================
+ Hits         5029    23217    +18188     
+ Misses      22513    17029     -5484     
- Partials      199     2462     +2263     

Impacted Files	Coverage Δ
consensus/request/handlers.go	81.08% <0.00%> (ø)
middleware/peer.go	86.66% <0.00%> (ø)
layer1/executor/tasks/examples/simple_task.go	0.00% <0.00%> (ø)
transport/upnp.go	0.00% <0.00%> (ø)
peering/bootlistener.go	0.00% <0.00%> (ø)
consensus/dman/dman.go	42.44% <0.00%> (ø)
peering/inactive.go	0.00% <0.00%> (ø)
peering/p2pbus.go	0.00% <0.00%> (ø)
consensus/lstate/localstate.go	73.28% <0.00%> (ø)
localrpc/handlers.go	26.48% <0.00%> (ø)
... and 232 more

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