fix(core-database): return serialized transactions

[air1one]

Summary

Return serialized transactions in findByHeightRangeWithTransactions as it's expected (same as in v2.6).

Checklist

• Documentation (if necessary)
• Tests (if necessary)
• Ready to be merged

[codecov]

Codecov Report

Merging #3824 into develop will increase coverage by 7.56%.
The diff coverage is 100.00%.

@@             Coverage Diff             @@
##           develop    #3824      +/-   ##
===========================================
+ Coverage    84.30%   91.87%   +7.56%     
===========================================
  Files          620      620              
  Lines        14769    14768       -1     
  Branches      1842     1842              
===========================================
+ Hits         12451    13568    +1117     
+ Misses        2086      939    -1147     
- Partials       232      261      +29     

Flag	Coverage Δ
#functional	6.10% <100.00%> (-0.01%)	⬇️
#integration	9.60% <0.00%> (+<0.01%)	⬆️
#unit	89.93% <0.00%> (+7.78%)	⬆️

Impacted Files	Coverage Δ
...core-database/src/repositories/block-repository.ts	96.92% <100.00%> (-0.05%)	⬇️
packages/core-p2p/src/hapi-nes/client.ts	2.83% <0.00%> (+2.83%)	⬆️
packages/core-p2p/src/hapi-nes/socket.ts	2.89% <0.00%> (+2.89%)	⬆️
packages/core-p2p/src/hapi-nes/listener.ts	3.93% <0.00%> (+3.93%)	⬆️
packages/core-p2p/src/peer.ts	100.00% <0.00%> (+41.66%)	⬆️
...ore-p2p/src/socket-server/utils/get-peer-config.ts	79.31% <0.00%> (+79.31%)	⬆️
packages/core-p2p/src/peer-processor.ts	90.90% <0.00%> (+90.90%)	⬆️
.../core-p2p/src/socket-server/plugins/accept-peer.ts	90.90% <0.00%> (+90.90%)	⬆️
...ges/core-p2p/src/socket-server/plugins/validate.ts	91.66% <0.00%> (+91.66%)	⬆️
packages/core-p2p/src/peer-verifier.ts	99.42% <0.00%> (+93.14%)	⬆️
... and 31 more

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