Stabilize EVM throughput integration test

[masih]

Submit deterministic in-order nonces instead of shuffling, and filter block transactions to only those sent by this test. Randomized same-account nonce gaps were causing the CI smoke test to hang waiting on receipts, which isn't the behavior under test here. Also bumps the timeout to 120s.

Flakes often, and on unrelated changes; example.

[github-actions]

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Build	Format	Lint	Breaking	Updated (UTC)
✅ passed	✅ passed	✅ passed	✅ passed	May 19, 2026, 5:14 PM

[cursor]

PR Summary

Low Risk
Low risk: changes are confined to an integration test and primarily remove nondeterminism/timeouts; failures would only affect CI signal, not runtime behavior.

Overview
Stabilizes the EVM throughput integration test by removing randomized nonce ordering and instead submitting the 100 same-account transactions with deterministic, in-order nonces (plus a 120s timeout).

Updates the nonce-order validation to wait receipts in bulk and filter block transactions to only hashes sent by this test, avoiding hangs/noise from unrelated block transactions; also drops the unused lodash shuffle import and helper.

^{Reviewed by Cursor Bugbot for commit defb5d9. Bugbot is set up for automated code reviews on this repo. Configure here.}

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 59.32%. Comparing base (f87766f) to head (defb5d9).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3465      +/-   ##
==========================================
- Coverage   59.32%   59.32%   -0.01%     
==========================================
  Files        2127     2127              
  Lines      175898   175898              
==========================================
- Hits       104354   104353       -1     
- Misses      62456    62457       +1     
  Partials     9088     9088              

Flag	Coverage Δ
sei-db	70.41% <ø> (-0.22%)	⬇️

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see 1 file with indirect coverage changes

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