fix(core-transaction-pool): keep previously forged transaction

[rainydio]

Summary

Do not remove just recently applied transaction from storage.

Checklist

• Ready to be merged

[codecov-commenter]

Codecov Report

Merging #4390 (b48d0d1) into develop (ee8c5e3) will decrease coverage by 1.33%.
The diff coverage is 0.00%.

@@             Coverage Diff             @@
##           develop    #4390      +/-   ##
===========================================
- Coverage    95.89%   94.56%   -1.34%     
===========================================
  Files          738      738              
  Lines        18339    18341       +2     
  Branches      2236     2236              
===========================================
- Hits         17587    17344     -243     
- Misses         556      801     +245     
  Partials       196      196              

Flag	Coverage Δ
functional	?
integration	9.54% <0.00%> (-0.01%)	⬇️
unit	94.48% <0.00%> (-0.02%)	⬇️

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Impacted Files	Coverage Δ
packages/core-transaction-pool/src/service.ts	84.73% <0.00%> (-0.91%)	⬇️
...rc/migrations/20190307000000-drop-wallets-table.ts	0.00% <0.00%> (-100.00%)	⬇️
...c/migrations/20180305200000-create-rounds-table.ts	0.00% <0.00%> (-100.00%)	⬇️
...c/migrations/20180305300000-create-blocks-table.ts	0.00% <0.00%> (-100.00%)	⬇️
.../migrations/20180305100000-create-wallets-table.ts	0.00% <0.00%> (-100.00%)	⬇️
.../migrations/20201013000000-create-wallets-table.ts	0.00% <0.00%> (-100.00%)	⬇️
...igrations/20190626000000-enforce-chained-blocks.ts	0.00% <0.00%> (-100.00%)	⬇️
...grations/20201103000000-set-autovacuum-settings.ts	0.00% <0.00%> (-100.00%)	⬇️
...rations/20191003000000-migrate-vendor-field-hex.ts	0.00% <0.00%> (-100.00%)	⬇️
...ations/20180305400000-create-transactions-table.ts	0.00% <0.00%> (-100.00%)	⬇️
... and 24 more

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