PHPStan fixes

Author: vovayatsyuk

Block/Tab/Product/Crosssell.php

@@ -51,6 +51,8 @@ protected function _prepareLayout()
                 ObjectManager::getInstance()->create(PreparePostData::class)
             );
         }
+
+        return $this;
     }
 
     private function getProductLinkField(): string

Controller/Adminhtml/AbstractMassStatus.php

@@ -27,6 +27,8 @@ class AbstractMassStatus extends \Magento\Backend\App\Action
      */
     const REDIRECT_URL = '*/*/';
 
+    const SUCCESS_MESSAGE = '';
+
     /**
      * @var Filter
      */

Controller/Adminhtml/Index/Save.php

@@ -43,7 +43,7 @@ public function execute()
 
             if (isset($data['rule'])) {
                 $data['conditions'] = $data['rule']['conditions'];
-                unset($data['rule']);
+                unset($data['rule']); // @phpstan-ignore-line
             }
 
             $model->loadPost($data);

Model/ResourceModel/Entity/Grid/Collection.php

@@ -75,6 +75,7 @@ public function getAggregations()
     public function setAggregations($aggregations)
     {
         $this->aggregations = $aggregations;
+        return $this;
     }
 
     /**

Setup/Patch/Data/InitialTabs.php

@@ -43,6 +43,7 @@ public function apply()
                 [ 'tab_id' => $entityId, 'store_id' => Store::DEFAULT_STORE_ID ]
             );
         }
+        return $this;
     }
 
     /**