Also change the default when calling setTheme (#1736)

Co-authored-by: Fabrizio Balliano <fabrizio.balliano@gmail.com>

Author: Asfolny

app/code/core/Mage/Core/Model/Design/Package.php

@@ -56,7 +56,7 @@ class Mage_Core_Model_Design_Package
     /**
      * Package theme
      *
-     * @var string
+     * @var array
      */
     protected $_theme;
 
@@ -242,7 +242,7 @@ public function setTheme()
     {
         switch (func_num_args()) {
             case 1:
-                foreach (['layout', 'template', 'skin', 'locale'] as $type) {
+                foreach (['layout', 'template', 'skin', 'locale', 'default'] as $type) {
                     $this->_theme[$type] = func_get_arg(0);
                 }
                 break;

phpstan.dist.baseline.neon

@@ -2125,16 +2125,6 @@ parameters:
 			count: 1
 			path: app/code/core/Mage/Core/Model/Design/Package.php
 
-		-
-			message: "#^Cannot assign offset 'layout'\\|'locale'\\|'skin'\\|'template' to string\\.$#"
-			count: 1
-			path: app/code/core/Mage/Core/Model/Design/Package.php
-
-		-
-			message: "#^Cannot assign offset string to string\\.$#"
-			count: 1
-			path: app/code/core/Mage/Core/Model/Design/Package.php
-
 		-
 			message: "#^Property Mage_Core_Model_Design_Package\\:\\:\\$_store \\(int\\|Mage_Core_Model_Store\\|string\\) on left side of \\?\\? is not nullable\\.$#"
 			count: 1