Fix static analysis

Author: VincentLanglet

src/Command/CommandHelper.php

@@ -331,7 +331,7 @@ public static function begin(
 				&& $generatedConfigReflection->hasConstant('PHPSTAN_VERSION_CONSTRAINT')
 			) {
 				$generatedConfigPhpStanVersionConstraint = $generatedConfigReflection->getConstant('PHPSTAN_VERSION_CONSTRAINT');
-				if ($generatedConfigPhpStanVersionConstraint !== null) {
+				if (is_string($generatedConfigPhpStanVersionConstraint)) {
 					$phpstanSemverVersion = ComposerHelper::getPhpStanVersion();
 					if (
 						$phpstanSemverVersion !== ComposerHelper::UNKNOWN_VERSION

src/Type/PHPStan/ClassNameUsageLocationCreateIdentifierDynamicReturnTypeExtension.php

@@ -13,6 +13,7 @@
 use PHPStan\Type\TypeCombinator;
 use ReflectionClass;
 use function count;
+use function is_string;
 use function sort;
 
 #[AutowiredService]
@@ -46,6 +47,9 @@ public function getTypeFromMethodCall(MethodReflection $methodReflection, Method
 		$identifiers = [];
 		$locationValueType = $scope->getType(new PropertyFetch($methodCall->var, 'value'));
 		foreach ($reflection->getConstants() as $constant) {
+			if (!is_string($constant)) {
+				continue;
+			}
 			if (!$locationValueType->isSuperTypeOf($scope->getTypeFromValue($constant))->yes()) {
 				continue;
 			}