Revert "Push React Navigation Toolbar to beta users (#4264)" (#4266)

This reverts commit d5f5a9f182488ca8a46520dfdf73fbdfa44350ab.

GitOrigin-RevId: 2fef8149a26e37c8635a9c34e3af88c9fa69ee06

services/web/app/src/Features/Project/ProjectController.js

@@ -883,7 +883,7 @@ const ProjectController = {
               logsUISubvariant: logsUIVariant.subvariant,
               showNewNavigationUI: shouldDisplayFeature(
                 'new_navigation_ui',
-                user.alphaProgram || user.betaProgram
+                user.alphaProgram
               ),
               showNewFileViewUI: shouldDisplayFeature(
                 'new_file_view',