Bug report

PHPDoc inline in new anonymous class creation causes Internal Error.

The use-case is adding a @psalm-immutable annotation to an anonymous class extending an immutable class as is described in the psalm documentation: https://psalm.dev/docs/annotating_code/supported_annotations/#psalm-immutable.

/** @psalm-immutable */
abstract class Foo {
}

new /** @psalm-immutable */ class extends Foo {
};

Using the --debug option prints:

PHP Fatal error:  Uncaught PHPStan\ShouldNotHappenException: Internal error. in phar:///application/vendor/phpstan/phpstan/phpstan/src/Rules/Generics/ClassTemplateTypeRule.php:36

Code snippet that reproduces the problem

https://phpstan.org/r/6a77347f-d037-4793-a23a-a477f4b110c7

Expected output

No errors!