[FE] Hide dependency_path_viewer

The dependency_path_drawer should be used in favor of the dependency_path_viewer.

1. Hide the viewer when the FF dependency_paths is enabled (thus using the dependency_path_drawer)
2. Remove dependency_path_viewer once dependency_path_drawer becomes the default (need to confirm with Design and PM). Might need to also update docs
   • https://docs.gitlab.com/user/application_security/dependency_list/#dependency-paths
3. Does that mean ancestors field becomes obsolete?

Ex: https://gitlab.com/gitlab-org/gitlab-ui/-/dependencies

dependency_path_viewer	Response

The dependency_path_viewer.vue is pulling data from the "ancestors" field.