Fix build

This reverts commit 58d53bf.

Author: ondrejmirtes

build/enum-adapter-errors.neon

@@ -139,3 +139,13 @@ parameters:
 			message: "#^Property PHPStan\\\\Reflection\\\\ClassReflection\\:\\:\\$reflection has unknown class PHPStan\\\\BetterReflection\\\\Reflection\\\\Adapter\\\\ReflectionEnum as its type\\.$#"
 			count: 1
 			path: ../src/Reflection/ClassReflection.php
+
+		-
+			message: "#^Method PHPStan\\\\Reflection\\\\Php\\\\BuiltinMethodReflection\\:\\:getDeclaringClass\\(\\) has invalid return type PHPStan\\\\BetterReflection\\\\Reflection\\\\Adapter\\\\ReflectionEnum\\.$#"
+			count: 1
+			path: ../src/Reflection/Php/BuiltinMethodReflection.php
+
+		-
+			message: "#^Method PHPStan\\\\Reflection\\\\Php\\\\NativeBuiltinMethodReflection\\:\\:getDeclaringClass\\(\\) has invalid return type PHPStan\\\\BetterReflection\\\\Reflection\\\\Adapter\\\\ReflectionEnum\\.$#"
+			count: 1
+			path: ../src/Reflection/Php/NativeBuiltinMethodReflection.php