Create an error screen when/if there is an error fetching the network fees on notifications details screen

### What is this about?

This is a request to improve UX on the upcoming new notifications feature.

### Scenario

- GIVEN a user open Network Fee Details sheet.
- WHEN checking a Notification Details screen.
- IF an fetching error happens
- EXPECT to present an error page informing the user the correct state of fetching attempt.

### Design

_No response_

### Technical Details

_No response_

### Threat Modeling Framework

_No response_

### Acceptance Criteria

_No response_

### Stakeholder review needed before the work gets merged

- [X] Engineering (needed in most cases)
- [X] 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_