Shop page: Filter Products by Price block only works with Number of decimals set to 2

[dinhtungdu]

Describe the bug

#6146 makes the Filter Products by Price block work with PHP templates. But currently, it only works with Number of decimals set to 2. When the setting is set to another value, the block return incorrect min and max price in the URL.

To reproduce

Steps to reproduce the behavior:

1. Set Number of decimals set to 0.
2. With a block theme, go to Appearance > Editor > Template > Product Catalog.
3. Add the Filter Products by Price block above the product grid and set Filter Button attribute to true.
4. Change the values of the price slider.
5. See the page reloads but the price in the URL is incorrect.

Expected behavior

The Filter Products by Price should work with any value of Number of decimals.

Screenshots