[Temp] Try to fix ValidatorRecurringEnrollment errors

[linked0]

This is a trial for fixing constant failure on ValidatoRecurringEnrollment by revealing pre-images beyond the validator cycle.

It's just code for the ValidatorRecurringEnrollment test.

[codecov]

Codecov Report

Merging #3154 (8ed6dd7) into v0.x.x (25655b3) will increase coverage by 2.47%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           v0.x.x    #3154      +/-   ##
==========================================
+ Coverage   17.87%   20.35%   +2.47%     
==========================================
  Files          64       65       +1     
  Lines        2881     2884       +3     
==========================================
+ Hits          515      587      +72     
+ Misses       2366     2297      -69     

Flag	Coverage Δ
integration	20.35% <ø> (+2.47%)	⬆️

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Impacted Files	Coverage Δ
source/agora/stats/Utils.d	100.00% <0.00%> (ø)
source/agora/utils/SCPPrettyPrinter.d	8.92% <0.00%> (+8.92%)	⬆️
source/agora/utils/Log.d	43.63% <0.00%> (+9.09%)	⬆️
source/agora/utils/PrettyPrinter.d	77.14% <0.00%> (+77.14%)	⬆️

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