[e2e] PPOM - Add spec for testing a cdn files update

[seaona]

What is this about?

Add spec for testing a cdn files update.

This should be done after those are closed:

• https://github.com/MetaMask/metamask-extension/issues/23639
• https://github.com/MetaMask/metamask-extension/issues/23640

Scenario

No response

Design

No response

Technical Details

No response

Threat Modeling Framework

No response

Acceptance Criteria

No response

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

No response

[cryptotavares]

Test flow: trigger Confirmation -> check that cdn requests to fetch files v1 were done -> update cdn files -> trigger another confirmation -> check that cdn requests to fetch files were done to v2