Fix return types for PHP 8.1

Author: derrabus

Crawler.php

@@ -1149,6 +1149,7 @@ public function getNode($position)
     /**
      * @return int
      */
+    #[\ReturnTypeWillChange]
     public function count()
     {
         return \count($this->nodes);
@@ -1157,6 +1158,7 @@ public function count()
     /**
      * @return \ArrayIterator|\DOMNode[]
      */
+    #[\ReturnTypeWillChange]
     public function getIterator()
     {
         return new \ArrayIterator($this->nodes);

Form.php

@@ -321,6 +321,7 @@ public function all()
      *
      * @return bool true if the field exists, false otherwise
      */
+    #[\ReturnTypeWillChange]
     public function offsetExists($name)
     {
         return $this->has($name);
@@ -335,6 +336,7 @@ public function offsetExists($name)
      *
      * @throws \InvalidArgumentException if the field does not exist
      */
+    #[\ReturnTypeWillChange]
     public function offsetGet($name)
     {
         return $this->fields->get($name);
@@ -350,6 +352,7 @@ public function offsetGet($name)
      *
      * @throws \InvalidArgumentException if the field does not exist
      */
+    #[\ReturnTypeWillChange]
     public function offsetSet($name, $value)
     {
         $this->fields->set($name, $value);
@@ -362,6 +365,7 @@ public function offsetSet($name, $value)
      *
      * @return void
      */
+    #[\ReturnTypeWillChange]
     public function offsetUnset($name)
     {
         $this->fields->remove($name);