test(node): fix TestNetworkVerificationOnNonEmptyDB

[Exca-DK]

Fixes #2495

It seems the issue arises because the timeout is set to 250 milliseconds, which makes the test somewhat racy. This test checks whether the stored blocks are compatible with the provided flag. If no block is received within 250 milliseconds, no error occurs because the state remains empty.

The proposed fix in PR #2494 appears hacky, as it simply increases the window time. I believe increasing the context timeout would be a more appropriate solution in this case.

That said, I wasn't able to reproduce the described error unless I explicitly introduced a delay using time.Sleep() here.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 73.55%. Comparing base (7239e37) to head (9a79739).
Report is 6 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2562      +/-   ##
==========================================
- Coverage   73.57%   73.55%   -0.03%     
==========================================
  Files         137      137              
  Lines       16662    16662              
==========================================
- Hits        12259    12255       -4     
- Misses       3537     3542       +5     
+ Partials      866      865       -1     

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