[node-split] Setup only localDB for smeshing-service

[jellonek]

Closes #6639

[codecov]

Codecov Report

Attention: Patch coverage is 63.63636% with 4 lines in your changes missing coverage. Please review.

Project coverage is 77.1%. Comparing base (ef83c0c) to head (3eb6982).
Report is 2 commits behind head on node-split-poc.

✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
node/node.go	70.0%	2 Missing and 1 partial ⚠️
node/smeshing_service.go	0.0%	1 Missing ⚠️

Additional details and impacted files

@@               Coverage Diff                @@
##           node-split-poc   #6641     +/-   ##
================================================
- Coverage            77.2%   77.1%   -0.1%     
================================================
  Files                 377     377             
  Lines               51830   51839      +9     
================================================
- Hits                40050   40013     -37     
- Misses               9416    9455     +39     
- Partials             2364    2371      +7     

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