[e2e] Manually generated token ask for confirmation when swap

### What is this about?

For an unknown reason, the test in spec `test/e2e/tests/swaps/swap-erc20-with-loaded-state.spec.ts`, case `should swap ETH to WETH` is warning about manual token addition. We need to investigate this further, hence this ticket

### Scenario

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### Design

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### Technical Details

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### Threat Modeling Framework

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### Acceptance Criteria

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### Stakeholder review needed before the work gets merged

- [ ] Engineering (needed in most cases)
- [ ] Design
- [ ] Product
- [ ] QA (automation tests are required to pass before merging PRs but not all changes are covered by automation tests - please review if QA is needed beyond automation tests)
- [ ] Security
- [ ] Legal
- [ ] Marketing
- [ ] Management (please specify)
- [ ] Other (please specify)

### References

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Start by running the case `should swap ETH to WETH` in `test/e2e/tests/swaps/swap-erc20-with-loaded-state.spec.ts` and observe when the manual token addition warning appears. Trace the warning from that scenario to determine why it is triggered; the issue provides no acceptance criteria beyond investigating the unexpected confirmation.

Written by the indexing model from the issue text.