Revert "Unify workspace dropdowns; Update layouts (#458)"

This reverts commit 4bc8448a1d.

apps/web/app/(marketing)/_components/site-header.tsx

@@ -0,0 +1,17 @@
+import { JWTUserData } from '@kit/supabase/types';
+import { Header } from '@kit/ui/marketing';
+
+import { AppLogo } from '~/components/app-logo';
+
+import { SiteHeaderAccountSection } from './site-header-account-section';
+import { SiteNavigation } from './site-navigation';
+
+export function SiteHeader(props: { user?: JWTUserData | null }) {
+  return (
+    <Header
+      logo={<AppLogo />}
+      navigation={<SiteNavigation />}
+      actions={<SiteHeaderAccountSection user={props.user ?? null} />}
+    />
+  );
+}