How to set inner shadow for svg?

Question

SVG

Hello. You need to set an inner shadow for path. I found a filter on Habré, here:

<filter id="inset-shadow">

<!-- Сдвиг тени -->
<feOffset dx="0" dy="0"></feOffset>

<!-- Размытие тени -->
<feGaussianBlur stdDeviation="20" result="offset-blur"></feGaussianBlur>

<!-- Инвертируем drop shadow
чтобы создать внутреннюю тень -->
<feComposite operator="out" in="SourceGraphic" in2="offset-blur" result="inverse"></feComposite>

<!-- Цвет и Прозрачность -->
<feFlood flood-color="black" flood-opacity="0.65" result="color"></feFlood>

<!-- Обрезаем цвет внутрь тени -->
<feComposite operator="in" in="color" in2="inverse" result="shadow"></feComposite>

<!-- Раcполагаем тень поверх элемента -->
<feComposite operator="over" in="shadow" in2="SourceGraphic"></feComposite>
</filter>

But: it also darkens the storke, which I do not need. Is there a filter that doesn't touch storke, or is there some other way to set the border besides storke="" that will allow this filter to be applied normally?