* Upgrade react-resizable-panels * Add FileTreeOpenProvider * Add OutlineProvider and OutlineContainer * Convert Outline tests to Cypress GitOrigin-RevId: afd9ae8190edf37642e36a4ffb331f1182c8982d
React IDE page: working editor GitOrigin-RevId: 3ba8cb787a6f7f8435686d8962adb7444d09acb5