Keep layout at v2 (#10006)

Partial revert of bodies pane.

Author: franknoirot

src/lib/layout/utils.ts

@@ -27,7 +27,7 @@ import {
 import { LAYOUT_SAVE_THROTTLE } from '@src/lib/constants'
 
 /** Most recent layout system version */
-export const LATEST_LAYOUT_VERSION: LayoutWithMetadata['version'] = 'v3'
+export const LATEST_LAYOUT_VERSION: LayoutWithMetadata['version'] = 'v2'
 
 // Attempt to load a persisted layout
 const defaultLayoutLoadResult = loadLayout('default')