fix(ui): Hover state of Back to Editor

[piyushzingade]

Fixes #3733

Description

This PR improves the hover styling of the navbar button. Previously, when hovering over the button, the arrow icon would disappear due to the applied styles. The updated styling ensures the arrow remains visible and consistent with the rest of the UI.

Changes

Before:

After:

• Updated the hover state styles for the navbar button.
• Ensured the arrow icon remains visible on hover.
• Kept the design consistent with existing navbar styling.

Verification

I have verified that this pull request:

• has no linting errors (npm run lint)
• has no test errors (npm run test)
• is from a uniquely named feature branch and is up to date with the develop branch
• is descriptively named and links to an issue number, i.e. Fixes #123
• meets the standards outlined in the accessibility guidelines

[piyushzingade]

I have fix the issue #3733
@raclim pls review this