MD Settings: Fix About page exception with Advanced lazy loading

chrome/browser/resources/settings/settings_page/main_page_behavior.js

Index: chrome/browser/resources/settings/settings_page/main_page_behavior.js
diff --git a/chrome/browser/resources/settings/settings_page/main_page_behavior.js b/chrome/browser/resources/settings/settings_page/main_page_behavior.js
index 600499e704e72bcd590b9649e15e087b4fd2290b..268f2af25fbcb40373d0105c89ce11871ba7b40b 100644
--- a/chrome/browser/resources/settings/settings_page/main_page_behavior.js
+++ b/chrome/browser/resources/settings/settings_page/main_page_behavior.js
@@ -144,7 +144,9 @@ var MainPageBehaviorImpl = {
         promise = this.expandSection_(currentSection);
       else if (scrollToSection)
         currentSection.scrollIntoView();
-    } else if (settings.Route.ADVANCED.contains(currentRoute) &&
+    } else if (
+        this.tagName == 'SETTINGS-BASIC-PAGE' &&
+        settings.Route.ADVANCED.contains(currentRoute) &&
         // Need to exclude routes that correspond to 'non-sectioned' children of
         // ADVANCED, otherwise tryTransitionToSection_ will recurse endlessly.
         !currentRoute.isNavigableDialog) {