Fix genesis header changes

[bogdan-rosianu]

Use a clone of the genesis header when changing it for indexing genesis data. Otherwise, an observer would have lost sync with the network

[codecov]

Codecov Report

Merging #3663 (9899a97) into development (53ac8a8) will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@             Coverage Diff              @@
##           development    #3663   +/-   ##
============================================
  Coverage        73.68%   73.68%           
============================================
  Files              587      587           
  Lines            76030    76031    +1     
============================================
+ Hits             56024    56027    +3     
+ Misses           15562    15561    -1     
+ Partials          4444     4443    -1     

Impacted Files	Coverage Δ
factory/processComponents.go	64.24% <100.00%> (+0.03%)	⬆️
p2p/libp2p/netMessenger.go	75.00% <0.00%> (+0.27%)	⬆️

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