Replace full objects for products in Blaze and Shipping Label flows

[itsmeichigo]

Part of WOOMOB-619

Description

This PR continues the work in #15959 to replace the full product objects in Blaze and Shipping Label flows to improve the performance of loading product details, since these flows don't require all details from the full product objects.

Changes include mostly just replacement of the type and addition of extra properties needed for product items in the Blaze and Shipping Label flow.

Also, to avoid trigger conversions more than necessary, the computed variables for fetched objects have been replaced.

Testing steps

TC1: Blaze dashboard card

1. Log in to a store with either Blaze extension or hosted on WPCom.
2. Enable the Blaze card on the dashboard.
3. If the store has no campaign, proceed to step 4. Otherwise, comment out these lines to force display the product on the dashboard card.
4. Confirm that the latest product is displayed on the card as a suggestion.

TC2: Blaze campaign creation

1. Log in to a WPCom store or install Blaze extension to your self-hosted store.
2. Navigate to the Products tab and select any published product.
3. Select Promote with Blaze.
4. Confirm that the campaign creation form displays the correct product image and relevant tag line and description for the product.
5. Select Ad Destination and confirm that the product URL is correct for the product.

TC3: Shipping Label

1. Pre-requisite: Install the WooShipping extension on your test store and log in to the same store on the app as the store owner.
2. Navigate to the Orders tab and select a paid order with at least one physical product.
3. Confirm that the Create shipping label button is available.
4. Select Create shipping label button.
5. Confirm that the purchase form displays the correct products.

Testing information

Tested and confirmed with simulator iPhone 16 iOS 18.4.

Screenshots

No UI changes.

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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.

[dangermattic]

	2 Warnings
⚠️	View files have been modified, but no screenshot or video is included in the pull request. Consider adding some for clarity.
⚠️	This PR is assigned to the milestone 23.0. This milestone is due in less than 2 days. Please make sure to get it merged by then or assign it to a milestone with a later deadline.

Generated by 🚫 Danger

[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	pr15965-b0623c3
	Version	22.9
	Bundle ID	com.automattic.alpha.woocommerce
	Commit	b0623c3
	Installation URL	1uupdkudhi638

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

[RafaelKayumov]

LGTM. Works as described.

[itsmeichigo]

I've added new changes to this PR to use generic results controllers and add separate types for Blaze and Shipping Label flows. This PR is ready for another look @RafaelKayumov 🙏