Merge branch '3.x' into 4.x

* 3.x:
  [Doc] Document about `html` and `html_attr` strategies
  Improve date methods phpdoc
  Fix deprecation messages
  Use a more precise return type in AbstractTwigCallable
  fix the handling of predefined arguments in CallExpression
  Allow Twig callable arguments to use camel or snake names
  fix intl-extra tests
  fix typo

src/AbstractTwigCallable.php

@@ -92,6 +92,9 @@ abstract class AbstractTwigCallable implements TwigCallableInterface
         return $this->options['needs_context'];
     }
 
+    /**
+     * @return static
+     */
     public function withDynamicArguments(string $name, string $dynamicName, array $arguments): self
     {
         $new = clone $this;