Fix blurry product thumbnails

[RafaelKayumov]

Fixes: WOOMOB-75

Description

Adds Pixel density / screen resolution UIScreen.main.scale multiplier to calculate image pixel size in ResizingImageProcessor.

Steps to reproduce

• Build from trunk.
• Make sure the Shipping extension is enabled.
• In the app navigate to the "Orders" and select an order eligible for a shipping label
• The "Create shipping label" button should be visible. Tap it.
• On newly appeared "Create Shipping Labels" screen expand the "N items" view.
• Presented product thumbnails will look blurry. Compare to product thumbnails in previous screen or in Products tab.

Testing information

• Build from current branch.
• Follow same steps to repro.
• Product thumbnails should look sharp.
• Consider tweaking larger font in iOS accessibility settings.

Screenshots

Before	After

Before (Large)	After (Large)

---

• 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 Prototype by scanning the QR code below to install the corresponding build.

	App Name	WooCommerce iOS Prototype
	Build Number	29349
	Version	PR #15517
	Bundle ID	com.automattic.alpha.woocommerce
	Commit	09874be
	Installation URL	16m6mmh7heshg

Automatticians: You can use our internal self-serve MC tool to give yourself access to those builds if needed.

[itsmeichigo]

Nice fix @RafaelKayumov! Would you mind explaining why using UIScreen's scale fixes this issue, while using the scale from @ScaleMetric doesn't? I was thinking that they were the equivalent of each other.

[RafaelKayumov]

Nice fix @RafaelKayumov! Would you mind explaining why using UIScreen's scale fixes this issue, while using the scale from @ScaleMetric doesn't? I was thinking that they were the equivalent of each other.

Sure. The @ScaledMetric is the property wrapper that adjusts wrapped value basing on Dynamic Type settings, i.e. the text size that can be increased/reduced in iOS accessibility settings. The UIScreen.scale is basically the screen pixel density. So we should account both to calculate the correct image size.