[LL-8263]Altcoin fee fix

[hzheng-ledger]

Fix viacoin fix (fix lower that relay fee and it causes transaction failure)
https://ledgerhq.atlassian.net/browse/LL-8263

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[codecov]

Codecov Report

Merging #1540 (8cf2d7a) into master (4629057) will decrease coverage by 17.67%.
The diff coverage is 100.00%.

@@             Coverage Diff             @@
##           master    #1540       +/-   ##
===========================================
- Coverage   54.83%   37.16%   -17.68%     
===========================================
  Files         506      438       -68     
  Lines       20404    19745      -659     
  Branches     5050     4691      -359     
===========================================
- Hits        11189     7338     -3851     
- Misses       9170    12390     +3220     
+ Partials       45       17       -28     

Impacted Files	Coverage Δ
src/families/bitcoin/types.ts	100.00% <ø> (ø)
src/families/bitcoin/getAccountNetworkInfo.ts	96.66% <100.00%> (+0.66%)	⬆️
src/families/bitcoin/wallet-btc/explorer/index.ts	85.27% <100.00%> (+4.62%)	⬆️
src/currencies/chopCurrencyUnitDecimals.ts	7.14% <0.00%> (-92.86%)	⬇️
src/families/ethereum/mock.ts	6.34% <0.00%> (-92.07%)	⬇️
src/families/cosmos/mock.ts	3.52% <0.00%> (-91.55%)	⬇️
src/currencies/sanitizeValueString.ts	9.37% <0.00%> (-90.63%)	⬇️
src/account/groupOperations.ts	9.52% <0.00%> (-88.89%)	⬇️
src/currencies/CurrencyURIScheme.ts	11.53% <0.00%> (-84.62%)	⬇️
src/families/cosmos/message.ts	5.76% <0.00%> (-84.62%)	⬇️
... and 262 more

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