add a fallback for missing state proof keys in participation file

[Aharonee]

Summary

Restoring participation has failed in the nightly build, since it was trying to query for StateProofKeys table which doesn't exist yet.

Made sure to call the migration in the correct places to fix this issue.

Test Plan

Unit tests added.

[codecov-commenter]

Codecov Report

Merging #3619 (0a1bfae) into master (53b157b) will increase coverage by 0.02%.
The diff coverage is 55.55%.

@@            Coverage Diff             @@
##           master    #3619      +/-   ##
==========================================
+ Coverage   48.05%   48.07%   +0.02%     
==========================================
  Files         381      381              
  Lines       62074    62080       +6     
==========================================
+ Hits        29829    29847      +18     
+ Misses      28822    28814       -8     
+ Partials     3423     3419       -4     

Impacted Files	Coverage Δ
node/node.go	23.33% <0.00%> (-0.08%)	⬇️
data/account/participation.go	64.10% <50.00%> (-1.12%)	⬇️
...merklesignature/persistentMerkleSignatureScheme.go	65.27% <100.00%> (ø)
data/account/account.go	40.00% <100.00%> (+2.50%)	⬆️
ledger/blockqueue.go	81.03% <0.00%> (-4.03%)	⬇️
network/wsPeer.go	68.88% <0.00%> (-0.28%)	⬇️
network/wsNetwork.go	62.99% <0.00%> (+0.19%)	⬆️
catchup/service.go	69.38% <0.00%> (+0.49%)	⬆️
data/transactions/verify/txn.go	45.02% <0.00%> (+0.86%)	⬆️
... and 7 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 53b157b...0a1bfae. Read the comment docs.