fix(forknet) Set snapshot on every epoch for dumper nodes

[VanBarbascu]

Node needs to take snapshots every epoch in order to generate state parts.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 71.00%. Comparing base (ef64846) to head (8eb7f8b).

Additional details and impacted files

@@            Coverage Diff             @@
##           master   #11285      +/-   ##
==========================================
- Coverage   71.00%   71.00%   -0.01%     
==========================================
  Files         781      781              
  Lines      155423   155423              
  Branches   155423   155423              
==========================================
- Hits       110365   110359       -6     
+ Misses      40301    40300       -1     
- Partials     4757     4764       +7     

Flag	Coverage Δ
backward-compatibility	0.24% <ø> (ø)
db-migration	0.24% <ø> (ø)
genesis-check	1.40% <ø> (ø)
integration-tests	37.17% <ø> (-0.02%)	⬇️
linux	69.05% <ø> (-0.01%)	⬇️
linux-nightly	70.44% <ø> (-0.05%)	⬇️
macos	52.44% <ø> (-0.01%)	⬇️
pytests	1.63% <ø> (ø)
sanity-checks	1.42% <ø> (ø)
unittests	65.42% <ø> (-0.01%)	⬇️
upgradability	0.29% <ø> (ø)

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