Fixed issue with search button disabled is not respecting minimum search length

Author: konarshankar07

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

@@ -294,9 +294,10 @@ define([
                 dropdown = $('<ul role="listbox"></ul>'),
                 value = this.element.val();
 
-            this.submitBtn.disabled = isEmpty(value);
+            this.submitBtn.disabled = true;
 
             if (value.length >= parseInt(this.options.minSearchLength, 10)) {
+                this.submitBtn.disabled = false;
                 $.getJSON(this.options.url, {
                     q: value
                 }, $.proxy(function (data) {