minor #4678 Add missing use statements in ExtensionInterface (KevinVanSonsbeek)

This PR was merged into the 3.x branch.

Discussion
----------

Add missing use statements in ExtensionInterface

Fixes #4677

Note: The classes were used specifically in a ``@psalm`-return` doc statement. But as the repository does not have any psalm config, and does not check it in the CI, this seems to have gone unnoticed for a few months.

Commits
-------

8c78952757 #4677: Add use statements for classes referenced in the getOperators `@psalm`-return doc

src/Extension/ExtensionInterface.php

@@ -11,8 +11,11 @@
 
 namespace Twig\Extension;
 
+use Twig\ExpressionParser;
 use Twig\ExpressionParser\ExpressionParserInterface;
 use Twig\ExpressionParser\PrecedenceChange;
+use Twig\Node\Expression\Binary\AbstractBinary;
+use Twig\Node\Expression\Unary\AbstractUnary;
 use Twig\NodeVisitor\NodeVisitorInterface;
 use Twig\TokenParser\TokenParserInterface;
 use Twig\TwigFilter;