Flaky test: `nimiq-utils::mod otp::create_unlocked_checked`

[hrxi]

In #3407 with entirely unrelated changes: https://github.com/nimiq/core-rs-albatross/actions/runs/15441605000/job/43460506783:

         FAIL [   1.298s] nimiq-utils::mod otp::create_unlocked_checked
  stdout ───

    running 1 test
    test otp::create_unlocked_checked ... FAILED

    failures:

    failures:
        otp::create_unlocked_checked

    test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 23 filtered out; finished in 1.29s
    
  stderr ───

    thread 'otp::create_unlocked_checked' panicked at utils/tests/otp/mod.rs:47:9:
    assertion failed: unlocked.is_err()
    note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace