[FE] VSA - Toggle horizontal and vertical VSA navigation with feature flag

Broken down from #246493 (closed)

Let's remove vertical stage tiles from group-level value stream. In addition, we need to move the horizontal path outside of the filter box.

• Updates the value_stream_analytics_path_navigation to toggle between vertical / horizontal (currently both are displayed when its enabled)
• Move horizontal path outside of filter box

Note:

• Update overview section: moved to #321438 (closed)