[web] turn nav-bar and toolbar red when having admin powers (#32582)

GitOrigin-RevId: 69c518ea113b6988002156c4ab6a97bbb9704d19

services/web/app/views/layout-base.pug

@@ -103,6 +103,7 @@ html(
 			'thin-footer': showThinFooter,
 			'website-redesign': isWebsiteRedesign === true || websiteRedesignOverride,
 			'application-page': isApplicationPage,
+			'user-has-admin-access': hasFeature('saas') && hasAdminAccess(),
 		}
 		data-theme='light'
 	)

services/web/frontend/stylesheets/pages/admin/admin.scss

@@ -1,3 +1,17 @@
+.user-has-admin-access {
+  .navbar-default {
+    background: linear-gradient(
+      to right,
+      var(--navbar-bg) 10rem,
+      var(--red-50) 40rem
+    );
+  }
+
+  .ide-redesign-toolbar {
+    --redesign-toolbar-background: var(--red-50);
+  }
+}
+
 #survey-form,
 #split-test-edit,
 #split-test-create {