[Woo POS] Replace product/variation local filtering with WC 9.6+ API support with page size 25

[jaclync]

Closes: #1483

Description

This pull request updates products and variations and filtering criteria based on the latest decision pdfdoF-62l-p2#comment-7224. It removes the virtual local filter (as we want to show virtual products), replaces the downloadable local filter with a parameter in the API request that works for WC versions 9.6+, and updates the page size from 100 to 25 for products and variations requests.

Regarding the page size, I tested with the smallest font size on the tallest iOS device available - iPad Pro 13 in' so far in iOS 18.2. The minimum amount of items to fill the scroll view in portrait is 10. Even so, I picked 25 to match Android. Please feel free to share any thoughts on the page size.

🗒️ It's likely we will update the minimum WC version requirement to 9.6 for POS based on p1736485809856869/1736484154.214279-slack-C070SJRA8DP. Since 9.6 is still in beta 2 at the time of writing, we will postpone the version requirement bump until the version is publicly released.

Pagination and Product Parameters:

• Networking/Networking/Remote/ProductVariationsRemote.swift: Changed the variationsPerPage constant from 100 to 25.
• Networking/Networking/Remote/ProductsRemote.swift: Added the downloadable parameter to the request and updated the productsPerPage constant from 100 to 25. [1] [2] [3]

Test Updates:

• Networking/NetworkingTests/Remote/ProductsRemoteTests.swift: Added a new test to verify that the downloadable parameter is set correctly in the loadProductsForPointOfSale method.

Filtering Criteria:

• Yosemite/Yosemite/PointOfSale/PointOfSaleItemService.swift: Removed the isNotVirtual and isNotDownloadable filtering functions and criteria. [1] [2]

Steps to reproduce

• Switch to a store eligible for POS, has at least one variable and downloadable product, and has WC version >= 9.6
• Go to Menu > Point of Sale mode --> the downloadable product should not be included, and all simple products in the list should have a price
• Tap on a variable product --> variations should be loaded shortly, up to 25 per page

Testing information

• @jaclync tests that the products are loaded without the downloadable filter for stores on WC version < 9.6

Screenshots

Notice that the downloadable products are filtered out.

before (with local filters removed)	after

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• I have considered if this change warrants user-facing release notes and have added them to RELEASE-NOTES.txt if necessary.

Reviewer (or Author, in the case of optional code reviews):

Please make sure these conditions are met before approving the PR, or request changes if the PR needs improvement:

• The PR is small and has a clear, single focus, or a valid explanation is provided in the description. If needed, please request to split it into smaller PRs.
• Ensure Adequate Unit Test Coverage: The changes are reasonably covered by unit tests or an explanation is provided in the PR description.
• Manual Testing: The author listed all the tests they ran, including smoke tests when needed (e.g., for refactorings). The reviewer confirmed that the PR works as expected on all devices (phone/tablet) and no regressions are added.

[wpmobilebot]

📲 You can test the changes from this Pull Request in WooCommerce iOS by scanning the QR code below to install the corresponding build.

	App Name	WooCommerce iOS
	Build Number	pr14843-42be4bc
	Version	21.3
	Bundle ID	com.automattic.alpha.woocommerce
	Commit	42be4bc
	App Center Build	WooCommerce - Prototype Builds #12463

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[staskus]

This works as described. However, I think based on pdfdoF-62l-p2#comment-7285 it could be also expanded or done in another PR:

• Allow no-price products
• Restrict POS entry from 9.6+

[staskus]

Based on pdfdoF-62l-p2#comment-7285, this one can be removed as well 👍