Add __set_state() to Doctrine test fixture classes

Implement __set_state() for test Doctrine annotation classes:
- X: with properties a and b
- Z: with property code
- ApiResource: with 6 properties
- Y: simple class with constant only

These test fixtures needed __set_state() to support var_export()
serialization in the test suite.

All tests now pass (3711 tests, 19858 assertions)

Author: claude

tests/PHPStan/Parser/Doctrine/ApiResource.php

@@ -25,4 +25,31 @@ final class ApiResource
 
 	public array $attributes = [];
 
+	/**
+	 * @param array<string, mixed> $properties
+	 */
+	public static function __set_state(array $properties): self
+	{
+		$instance = new self();
+		if (isset($properties['shortName'])) {
+			$instance->shortName = $properties['shortName'];
+		}
+		if (isset($properties['description'])) {
+			$instance->description = $properties['description'];
+		}
+		if (isset($properties['iri'])) {
+			$instance->iri = $properties['iri'];
+		}
+		if (isset($properties['itemOperations'])) {
+			$instance->itemOperations = $properties['itemOperations'];
+		}
+		if (isset($properties['collectionOperations'])) {
+			$instance->collectionOperations = $properties['collectionOperations'];
+		}
+		if (isset($properties['attributes'])) {
+			$instance->attributes = $properties['attributes'];
+		}
+		return $instance;
+	}
+
 }

tests/PHPStan/Parser/Doctrine/X.php

@@ -14,4 +14,19 @@ class X
 	/** @var mixed */
 	public $b;
 
+	/**
+	 * @param array<string, mixed> $properties
+	 */
+	public static function __set_state(array $properties): self
+	{
+		$instance = new self();
+		if (isset($properties['a'])) {
+			$instance->a = $properties['a'];
+		}
+		if (isset($properties['b'])) {
+			$instance->b = $properties['b'];
+		}
+		return $instance;
+	}
+
 }

tests/PHPStan/Parser/Doctrine/Y.php

@@ -7,4 +7,12 @@ class Y
 
 	public const SOME = 1;
 
+	/**
+	 * @param array<string, mixed> $properties
+	 */
+	public static function __set_state(array $properties): self
+	{
+		return new self();
+	}
+
 }

tests/PHPStan/Parser/Doctrine/Z.php

@@ -11,4 +11,16 @@ class Z
 	/** @var mixed */
 	public $code;
 
+	/**
+	 * @param array<string, mixed> $properties
+	 */
+	public static function __set_state(array $properties): self
+	{
+		$instance = new self();
+		if (isset($properties['code'])) {
+			$instance->code = $properties['code'];
+		}
+		return $instance;
+	}
+
 }