flaky test: `TestNotTruncateDatabaseOnRestartWithExistingDatabase`

**Claude:** Reporting flaky test.

## Flaky Test Report

**Test:** `TestNotTruncateDatabaseOnRestartWithExistingDatabase`
**Package:** `github.com/ethereum-optimism/optimism/op-acceptance-tests/tests/safeheaddb_elsync`
**Jobs:** `memory-all-opn-op-geth`, `memory-all-opn-op-reth`
**Workflow:** `main`

## Flake History (CircleCI Insights)

- `memory-all-opn-op-geth`: 3 flakes
- `memory-all-opn-op-reth`: 2 flakes

## Latest Failure

**CI:** https://app.circleci.com/pipelines/gh/ethereum-optimism/optimism/124730/workflows/53c5dc24-2973-49fb-a6a6-8423949183bf

**Error:**
```
Error Trace: /home/circleci/project/op-devstack/dsl/check.go:26
/home/circleci/project/op-devstack/presets/singlechain_from_runtime.go:77
/home/circleci/project/op-devstack/presets/singlechain_multinode.go:22
/home/circleci/project/op-acceptance-tests/tests/safeheaddb_elsync/safeheaddb_test.go:18
/home/circleci/project/op-acceptance-tests/tests/safeheaddb_elsync/safeheaddb_test.go:86
Error: Received unexpected error:
operation failed permanently after 120 attempts: expected head to match: safe
Test: TestNotTruncateDatabaseOnRestartWithExistingDatabase
```

Observed on PR #20640, whose source changes are in `kona-executor` (Rust) and unrelated to the acceptance test path.