src: close webstorage database on init failure

[Archkon]

Fixes: #64640

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 90.14%. Comparing base (00917ba) to head (71a70f1).
⚠️ Report is 11 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #64641      +/-   ##
==========================================
- Coverage   90.14%   90.14%   -0.01%     
==========================================
  Files         741      741              
  Lines      242076   242076              
  Branches    45558    45553       -5     
==========================================
- Hits       218216   218208       -8     
- Misses      15385    15391       +6     
- Partials     8475     8477       +2     

Files with missing lines	Coverage Δ
src/node_webstorage.cc	74.93% <100.00%> (ø)

... and 31 files with indirect coverage changes

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