Act better on existing input focus instead of removing it

The focus of the input field is maintained, proper classes are added and autocomplete fires once the component is initialized.

Author: krzksz

app/code/Magento/Search/view/frontend/web/form-mini.js

@@ -89,7 +89,9 @@ define([
                 }, this), 250);
             }, this));
 
-            this.element.trigger('blur');
+            if (this.element.get(0) === document.activeElement) {
+                this.setActiveState(true);
+            }
 
             this.element.on('focus', this.setActiveState.bind(this, true));
             this.element.on('keydown', this._onKeyDown);