Prevent invalid element name (#12954)

* Prevent invalid element name

Prevent create form element with empty name value like ''

* trim name

* Update element.zep

* Update element.zep

phalcon/forms/element.zep

@@ -60,6 +60,12 @@ abstract class Element implements ElementInterface
 	 */
 	public function __construct(string name, var attributes = null)
 	{
+		let name = trim(name);
+
+		if empty name {
+			throw new \InvalidArgumentException("Form element name is required");
+		}
+
 		let this->_name = name;
 		if typeof attributes == "array" {
 			let this->_attributes = attributes;