Hotfix: Hide rewiring America under feature flag

[abdullai-t]

Summary / Highlights

This PR implements a feature that allows hiding menu items under feature flags. With this implementation, the rewiring-america route on the frontend is now controlled by a feature flag.

Details (Give details about what this PR accomplishes, include any screenshots etc)

https://github.com/user-attachments/assets/17a255df-f794-49fd-9c26-653bbd625695

Testing Steps (Provide details on how your changes can be tested)

Requirements (place an x in each [ ])

• [x] I've read and understood the Contributing Guidelines and have done my best effort to follow them.
• [x] I've tested my changes manually.
• [ ] I've added unit tests to my PR.

Transparency (Project board)

• [x] I've given my PR a meaningful title.
• [x] I linked this PR to the relevant issue.
• [ ] I moved the linked issue from the "Sprint backlog" to "In progress" when I started this.
• [ ] I moved the linked issue to "QA Verification" now that it is ready to merge.

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 96.66667% with 1 line in your changes missing coverage. Please review.

Please upload report for BASE (v6.2.1-hotfix@ad1c660). Learn more about missing BASE report.

Files	Patch %	Lines
src/api/tests/unit/utils/test_common.py	66.66%	1 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## v6.2.1-hotfix #1142 +/- ## ================================================ Coverage ? 55.30% ================================================ Files ? 441 Lines ? 32635 Branches ? 0 ================================================ Hits ? 18049 Misses ? 14586 Partials ? 0 ```

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