Strange lag when tapping to NFT

### What is this about?

There is a pause before tabbing over to the NFT tab (visually the white bar lags).

https://github.com/user-attachments/assets/e3d73c18-6f79-4dff-a691-f3435b1af8b9

### 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_

Start by reproducing the pause shown in the attached video when tapping the NFT tab, then trace the mobile NFT tab UI and its transition handling. Done means the white bar and tab content transition without the reported visible lag; no specific files or tests are named in the issue.

Written by the indexing model from the issue text.