Fix settling when one side closes/updates with outdated BalanceProof

[andrevmatos]

Fixes #1607

Short description
Search on transfer history for matching EnvelopeMessage (if needed) and use its values to settle channel.

Definition of Done

• Steps to manually test the change have been documented
• Acceptance criteria are met
• Change has been manually tested by the reviewer (dApp)

Steps to manually test the change (dApp)

1. This condition won't happen naturally on real life, each end usually going to close/settle with their latest view of partner's BalanceProof, in order to get the most tokens, but an attacker could specifically chose to close with outdated BP in order to prevent us from settling the channel.
2. Therefore, specially tweaked tests were made to trigger this condition and ensure we still can find the right BP and settle nonetheless.

[codecov]

Codecov Report

Merging #1689 into master will decrease coverage by 1.58%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master    #1689      +/-   ##
==========================================
- Coverage   96.85%   95.27%   -1.59%     
==========================================
  Files          64      148      +84     
  Lines        3688     5222    +1534     
  Branches      829      957     +128     
==========================================
+ Hits         3572     4975    +1403     
- Misses        105      195      +90     
- Partials       11       52      +41     

Flag	Coverage Δ
#dapp	91.46% <ø> (?)
#sdk	96.81% <100.00%> (-0.04%)	⬇️
#sdk_integration	?

Impacted Files	Coverage Δ
raiden-ts/src/transfers/actions.ts	100.00% <ø> (ø)
raiden-ts/src/transfers/reducer.ts	96.46% <ø> (-0.18%)	⬇️
raiden-ts/src/channels/epics.ts	98.02% <100.00%> (+0.77%)	⬆️
raiden-ts/src/channels/reducer.ts	96.93% <100.00%> (ø)
raiden-ts/src/channels/types.ts	100.00% <100.00%> (ø)
raiden-ts/src/messages/utils.ts	99.00% <100.00%> (ø)
raiden-ts/src/migration/3.ts	100.00% <100.00%> (ø)
raiden-ts/src/services/epics.ts	99.03% <100.00%> (ø)
raiden-ts/src/transfers/utils.ts	93.33% <100.00%> (+1.53%)	⬆️
raiden-ts/src/polyfills.ts	85.71% <0.00%> (-14.29%)	⬇️
... and 86 more

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update c7514d1...38a3820. Read the comment docs.

[kelsos]

Lgtm 👍