AVM: Fix opBytesLt for len(rhs) < len(lhs)

[jannotti]

Added test for old failing case.

[ahangsu]

I think this should be a right implementation... my bad for didn't catching the bytes.Compare behavior...

[codecov]

Codecov Report

Merging #5051 (bfdd36a) into master (2594c32) will increase coverage by 0.02%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master    #5051      +/-   ##
==========================================
+ Coverage   53.55%   53.58%   +0.02%     
==========================================
  Files         430      430              
  Lines       54085    54091       +6     
==========================================
+ Hits        28966    28984      +18     
+ Misses      22873    22864       -9     
+ Partials     2246     2243       -3     

Impacted Files	Coverage Δ
data/transactions/logic/eval.go	90.48% <100.00%> (+0.01%)	⬆️
ledger/tracker.go	74.26% <0.00%> (-0.85%)	⬇️
ledger/acctonline.go	78.64% <0.00%> (-0.53%)	⬇️
ledger/testing/randomAccounts.go	56.26% <0.00%> (ø)
ledger/acctupdates.go	69.24% <0.00%> (+0.24%)	⬆️
catchup/service.go	69.80% <0.00%> (+0.48%)	⬆️
crypto/merkletrie/node.go	93.48% <0.00%> (+1.86%)	⬆️
agreement/proposalManager.go	98.03% <0.00%> (+1.96%)	⬆️
agreement/cryptoVerifier.go	69.71% <0.00%> (+2.11%)	⬆️
crypto/merkletrie/trie.go	68.61% <0.00%> (+2.18%)	⬆️

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