Issue #3006812 by NickDickinsonWilde, Ankit.Gupta:...

Issue #3006812 by NickDickinsonWilde, Ankit.Gupta: ViewsExecutable->exposed_widgets has wrong variable type in definition

(cherry picked from commit 24378352)

core/modules/views/src/ViewExecutable.php

@@ -341,9 +341,12 @@ class ViewExecutable {
   public $inited;
 
   /**
-   * The rendered output of the exposed form.
+   * The render array for the exposed form.
    *
-   * @var string
+   * In cases that the exposed form is rendered as a block this will be an
+   * empty array.
+   *
+   * @var array
    */
   public $exposed_widgets;