[Due for payment 2025-05-27] [Due for payment 2025-05-14] [Desktop Navigation] Add a new Workspaces tab to the navigators and update navigation bar styles

[mountiny]

Part of https://github.com/Expensify/Expensify/issues/468845

Implement this section of the Design doc (linking to the tasks section as this project is being handled by SWM).

Issue Owner

Current Issue Owner: @sonialiap

[melvin-bot]

Triggered auto assignment to @sonialiap (NewFeature), see https://stackoverflowteams.com/c/expensify/questions/14418#:~:text=BugZero%20process%20steps%20for%20feature%20requests for more details. Please add this Feature request to a GH project, as outlined in the SO.

[adamgrzybowski]

This one is for me 👋

[adamgrzybowski]

The draft is here. After merging other PRs from this project and removing beta, we will need to do some finishing touches. #60184