Allow sorting of a product's prices by any key, e.g. unit_price

[wallacio]

Description

For products with multiple prices (e.g. a product which has monthly and annual subscription prices), I would expect to be able to sort the product's prices by some known Price key, eg unit_price, and define the sort order. The prices are currently ordered by ID, as defined in elements/Product.php:

stripe/src/elements/Product.php

Lines 734 to 739 in a934abd

	private function createPriceQuery(): PriceQuery
	{
	return Price::find()
	->owner($this)
	->orderBy(['id' => SORT_ASC]);
	}

In the same way that Product::getPrices() can be passed criteria (per issue #97, resolved by PR #98), it would be very nice to be able to pass a sort order override.

Steps to reproduce

1. Set up a Product in Stripe
2. Add multiple prices to that Product
3. Retrieve the prices for the product using product.prices or product.getPrices()
4. Observe that the order is fixed by ID

Additional info

• Craft version: 5.10
• PHP version: 8.4
• Stripe plugin: 1.7.2

[linear-code]

PT-3161