Replace instanceof checks in JsonThrowOnErrorDynamicReturnTypeExtension#4155

Khartir wants to merge 1 commit intophpstan:2.1.xphpstan/phpstan-src:2.1.xfrom

Khartir:replace_instanceof_in_JsonThrowOnErrorDynamicReturnTypeExtensionKhartir/phpstan-src:replace_instanceof_in_JsonThrowOnErrorDynamicReturnTypeExtensionCopy head branch name to clipboard