MWPW-147127 Scrolling on the gnav in mobile portrait and landscape vi…

…ew is not working as expected ,navigation menu when opened is not seen rendered completely in MILO Pages (#2185)

* Fixed content being cutoff when menu is open in mobile/tablet viewports

* Undid prior css change and fixed an issue whoch caused setHamburgerMenu to never be called

libs/blocks/global-navigation/global-navigation.js

@@ -648,7 +648,7 @@ class Gnav {
 
     return this.loadDelayed().then(() => {
       this.blocks.search.instance = new this.Search(this.blocks.search.config);
-    });
+    }).catch(() => {});
   };
 
   isToggleExpanded = () => this.elements.mobileToggle?.getAttribute('aria-expanded') === 'true';