docs: support multiple sidebars in a project (#11768)

* changed to new sidebar across projects except resources

* finalize multi sidebar support

* clean up

* remove redundant property

* small changes

* fixes

* generate

* fix error

* fix initial open

www/apps/resources/app/recipes/page.mdx

@@ -8,4 +8,4 @@ export const metadata = {
 
 This section of the documentation provides recipes for common use cases with example implementations.
 
-<ChildDocs onlyTopLevel />
+<ChildDocs onlyTopLevel hideItems={["Overview"]} />