Need to enable fetchpriority on product image (VARGAL issue)

Hello,
I’m using the ALD plugin with VARGAL enabled for product import.

For performance and SEO reasons (Google PageSpeed / LCP), I’d like to add fetchpriority=”high” to the main product image, but this doesn’t seem possible while VARGAL is active.

I’ve tried using WordPress filters like woocommerce_single_product_image_html, and even JavaScript, but VARGAL appears to override everything.

Is there any recommended way to allow fetchpriority=”high” (or preload) to work with VARGAL active?

Here’s an example product where it doesn’t apply:
👉 https://avelsy.com/product/12v-marine-self-priming-water-pump-multi-outlet-diaphragm/

Thanks for your help!