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/api-reference/app/layout.tsx

@@ -58,9 +58,6 @@ export default function RootLayout({
       gaId={process.env.NEXT_PUBLIC_GA_ID}
     >
       <WideLayout
-        sidebarProps={{
-          expandItems: false,
-        }}
         showToc={false}
         showBreadcrumbs={false}
         ProvidersComponent={Providers}