MOBILE-2567 courses: Fix keyboard closed in iOS when filtering

src/core/courses/pages/my-courses/my-courses.ts

@@ -152,7 +152,7 @@ export class CoreCoursesMyCoursesPage implements OnDestroy {
         if (this.showFilter) {
             setTimeout(() => {
                 this.searchbar.setFocus();
-            });
+            }, 500);
         }
     }
 

src/core/courses/pages/my-overview/my-overview.ts

@@ -283,7 +283,7 @@ export class CoreCoursesMyOverviewPage implements OnDestroy {
         if (this.showFilter) {
             setTimeout(() => {
                 this.searchbar.setFocus();
-            });
+            }, 500);
         }
     }