Fixed undefined constant in installer (#3259)

* Fixed undefined constant

* Update phpstan.dist.baseline.neon

---------

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

Author: sreichel

app/code/core/Mage/Install/Model/Installer.php

@@ -222,7 +222,7 @@ public function createAdministrator($data)
         //to support old logic checking if real data was passed
         if (is_array($data)) {
             $data = $this->validateAndPrepareAdministrator($data);
-            if (is_array(data)) {
+            if (is_array($data)) {
                 throw new Exception(Mage::helper('install')->__('Please correct the user data and try again.'));
             }
         }

phpstan.dist.baseline.neon

@@ -3220,11 +3220,6 @@ parameters:
 			count: 1
 			path: app/code/core/Mage/Install/Model/Config.php
 
-		-
-			message: "#^Constant data not found\\.$#"
-			count: 1
-			path: app/code/core/Mage/Install/Model/Installer.php
-
 		-
 			message: "#^Method Mage_Install_Model_Installer\\:\\:getDataModel\\(\\) should return Mage_Install_Model_Session but returns Mage_Install_Model_Installer_Data\\|null\\.$#"
 			count: 1