fix search screen looks white

app/assets/javascripts/discourse/components/search-text-field.js.es6

@@ -10,6 +10,10 @@ export default TextField.extend({
 
   @on("didInsertElement")
   becomeFocused() {
-    if (this.get('hasAutofocus')) this.$().focus();
+    if (!this.get('hasAutofocus')) { return; }
+    // iOS is crazy, without this we will not be
+    // at the top of the page
+    $(window).scrollTop(0);
+    this.$().focus();
   }
 });