Update collection products query

[orzechdev]

I want to merge this change because... it updates collection products query.

Screenshots

Pull Request Checklist

1. All visible strings are translated with proper context.
2. All data-formatting is locale-aware (dates, numbers, and so on).
3. The changes are tested.
4. The code is documented (docstrings, project documentation).
5. Changes are mentioned in the changelog.

Test Environment Config

API_URI=https://add-searchable-and-available-for-purchase-flags-to-product.api.saleor.rocks/graphql/

[patrys]

Task linked: CU-7eup5r Storefront changes for "visible in listings" feature.