Fix widget detail state check logic (#7786)

* Fix widget detail state check logic

* remove hidden class style

* Update parent.php

* Update index.php

themes/default/css.php

@@ -4129,10 +4129,6 @@ else { //default: white
 		cursor: pointer;
 	}
 
-	.hidden {
-		display: none !important;
-	}
-
 	.no_results {
 		display: none;
 		padding: 15px;

themes/default/template.php

@@ -780,10 +780,10 @@
 					const text = item.innerText.toLowerCase();
 
 					if (text.includes(search_term)) {
-						item.classList.remove('hidden');
+						item.style.display = 'block';
 						visible_count++;
 					} else {
-						item.classList.add('hidden');
+						item.style.display = 'none';
 					}
 				});