Fix some more phpstan reported errors.

phpstan.neon

@@ -21,7 +21,7 @@ parameters:
         - '#Access to an undefined property PHPUnit\\Framework\\Test::\$fixtureManager#'
         - '#Method Redis::#'
         - '#Call to an undefined method Traversable::getArrayCopy().#'
-        - '#Variable $config in isset\(\) is never defined#'
+        - '#Variable \$config in isset\(\) is never defined#'
     earlyTerminatingMethodCalls:
         Cake\Shell\Shell:
             - abort

src/ORM/Association/BelongsTo.php

@@ -111,8 +111,7 @@ class BelongsTo extends Association
      * `$options`
      *
      * @param \Cake\Datasource\EntityInterface $entity an entity from the source table
-     * @param array|\ArrayObject $options options to be passed to the save method in
-     * the target table
+     * @param array $options options to be passed to the save method in the target table
      * @return bool|\Cake\Datasource\EntityInterface false if $entity could not be saved, otherwise it returns
      * the saved entity
      * @see \Cake\ORM\Table::save()

src/ORM/Association/BelongsToMany.php

@@ -689,8 +689,7 @@ class BelongsToMany extends Association
      * not deleted.
      *
      * @param \Cake\Datasource\EntityInterface $entity an entity from the source table
-     * @param array|\ArrayObject $options options to be passed to the save method in
-     * the target table
+     * @param array $options options to be passed to the save method in the target table
      * @throws \InvalidArgumentException if the property representing the association
      * in the parent entity cannot be traversed
      * @return bool|\Cake\Datasource\EntityInterface false if $entity could not be saved, otherwise it returns

src/ORM/Association/HasMany.php

@@ -155,8 +155,7 @@ class HasMany extends Association
      * `$options`
      *
      * @param \Cake\Datasource\EntityInterface $entity an entity from the source table
-     * @param array|\ArrayObject $options options to be passed to the save method in
-     * the target table
+     * @param array $options options to be passed to the save method in the target table
      * @return bool|\Cake\Datasource\EntityInterface false if $entity could not be saved, otherwise it returns
      * the saved entity
      * @see \Cake\ORM\Table::save()

src/ORM/Association/HasOne.php

@@ -95,8 +95,7 @@ class HasOne extends Association
      * `$options`
      *
      * @param \Cake\Datasource\EntityInterface $entity an entity from the source table
-     * @param array|\ArrayObject $options options to be passed to the save method in
-     * the target table
+     * @param array $options options to be passed to the save method in the target table
      * @return bool|\Cake\Datasource\EntityInterface false if $entity could not be saved, otherwise it returns
      * the saved entity
      * @see \Cake\ORM\Table::save()