Fix Sidebar Active Navigation State

[Abd-Standard]

Description
Resolve the issue where the active navigation item is not consistently highlighted after changing routes.

Acceptance Criteria
Active menu item updates correctly.
Refreshing the page preserves active state.
No visual regressions occur.

[Tsammie]

@Tsammie has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

Hi maintainer, I’d like to work on this. I can do a focused UI consistency pass, clean up obvious spacing/typography/component mismatches, and keep the PR limited to clearly visible improvements.

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[mekeke111]

@mekeke111 has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

Hi maintainer I am a full stack developer I can handle this

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[qa-eden]

@qa-eden has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

Dear Maintainer, I reviewed this issue and would love to contribute if it's still available. I have experience with similar work and can submit a PR while following the project's contribution guidelines.
Thanks for maintaining the project. Looking forward to contributing!

ℹ️ Repo Maintainers: To accept this application, review their application or assign @qa-eden to this issue.

[devcarole]

@devcarole has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

I’d like to work on this issue.

ℹ️ Repo Maintainers: To accept this application, review their application or assign @devcarole to this issue.