Merge branch '4.4' into 5.3

* 4.4:
  Fix return types for PHP 8.1

Author: derrabus

OptionsResolver.php

@@ -942,6 +942,7 @@ public function resolve(array $options = [])
      * @throws OptionDefinitionException If there is a cyclic dependency between
      *                                   lazy options and/or normalizers
      */
+    #[\ReturnTypeWillChange]
     public function offsetGet($option, bool $triggerDeprecation = true)
     {
         if (!$this->locked) {
@@ -1199,6 +1200,7 @@ private function verifyTypes(string $type, $value, array &$invalidTypes, int $le
      *
      * @see \ArrayAccess::offsetExists()
      */
+    #[\ReturnTypeWillChange]
     public function offsetExists($option)
     {
         if (!$this->locked) {
@@ -1215,6 +1217,7 @@ public function offsetExists($option)
      *
      * @throws AccessException
      */
+    #[\ReturnTypeWillChange]
     public function offsetSet($option, $value)
     {
         throw new AccessException('Setting options via array access is not supported. Use setDefault() instead.');
@@ -1227,6 +1230,7 @@ public function offsetSet($option, $value)
      *
      * @throws AccessException
      */
+    #[\ReturnTypeWillChange]
     public function offsetUnset($option)
     {
         throw new AccessException('Removing options via array access is not supported. Use remove() instead.');
@@ -1243,6 +1247,7 @@ public function offsetUnset($option)
      *
      * @see \Countable::count()
      */
+    #[\ReturnTypeWillChange]
     public function count()
     {
         if (!$this->locked) {