fix(core-blockchain): block download

[sebastijankuzner]

Summary

This PR fixes #4035.

Changes:

Download blocks until we reach blockchain processing queue limit. If block is not processed due any reason clear queue and remove downloaded blocks. Start downloading again from the latest stored block in the database.

Checklist

• Ready to be merged

[codecov]

Codecov Report

Merging #4057 into develop will decrease coverage by 0.08%.
The diff coverage is 25.00%.

@@             Coverage Diff             @@
##           develop    #4057      +/-   ##
===========================================
- Coverage    96.74%   96.65%   -0.09%     
===========================================
  Files          715      715              
  Lines        17190    17204      +14     
  Branches      2088     2090       +2     
===========================================
- Hits         16630    16629       -1     
- Misses         401      416      +15     
  Partials       159      159              

Flag	Coverage Δ
#functional	5.98% <0.00%> (-0.01%)	⬇️
#integration	10.02% <0.00%> (-0.01%)	⬇️
#unit	95.30% <25.00%> (-0.09%)	⬇️

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Impacted Files	Coverage Δ
...ain/src/processor/handlers/accept-block-handler.ts	92.85% <ø> (ø)
...kchain/src/processor/handlers/exception-handler.ts	100.00% <ø> (ø)
...rc/processor/handlers/invalid-generator-handler.ts	100.00% <ø> (ø)
...kchain/src/processor/handlers/unchained-handler.ts	100.00% <ø> (ø)
.../processor/handlers/verification-failed-handler.ts	100.00% <ø> (ø)
packages/core-blockchain/src/blockchain.ts	91.98% <7.69%> (-4.91%)	⬇️
...s/core-blockchain/src/processor/block-processor.ts	97.95% <100.00%> (+0.02%)	⬆️
...chain/src/state-machine/actions/download-blocks.ts	88.88% <100.00%> (-8.26%)	⬇️

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