Store full details of EVMConnect/EthConnect updates for Token ops

[peterbroadhurst]

See hyperledger/firefly-tokens-erc20-erc721#72 for additional detail.

[codecov-commenter]

Codecov Report

Merging #948 (abcb5c5) into main (dbd20c4) will decrease coverage by 0.01%.
The diff coverage is 100.00%.

❗ Current head abcb5c5 differs from pull request most recent head 15e788c. Consider uploading reports for the commit 15e788c to get more accurate results

@@            Coverage Diff             @@
##             main     #948      +/-   ##
==========================================
- Coverage   99.98%   99.97%   -0.02%     
==========================================
  Files         299      299              
  Lines       19492    19485       -7     
==========================================
- Hits        19489    19480       -9     
- Misses          3        4       +1     
- Partials        0        1       +1     

Impacted Files	Coverage Δ
internal/tokens/fftokens/fftokens.go	99.54% <100.00%> (-0.46%)	⬇️
internal/blockchain/common/common.go	100.00% <0.00%> (ø)
internal/dataexchange/ffdx/dxevent.go	100.00% <0.00%> (ø)
internal/operations/operation_updater.go	100.00% <0.00%> (ø)

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