- Set formSent() public on FormHandler class

- Fixed class attributes on form which was overwritting it instead of adding to base class

src/Method/FormHandler.php

@@ -34,7 +34,7 @@ class FormHandler {
         $this->initialize();
     }
     
-    protected function formSent() : void
+    public function formSent() : void
     {
         if ( false !== $this->context->formSent = $this->sent ) {
             if ( $this->context->formName ?? false ) {