Make Filter Products by Price work with PHP templates

[Aljullu]

Currently, it's not possible to use the Filter Products by Price block with PHP templates. That's because that block is designed to only work with the All Products block.

This issue is about updating it, so it can work with the Shop catalog template.

To reproduce

1. With a block theme, go to Appearance > Editor > Template > Product Catalog.
2. Add the Filter Products by Price block above the product grid.
3. Change the values of the price slider.
4. Notice the products in the product grid don't update.

Expected behavior

The products in the product grid should update based on the selected filters.