[Shipping Lines] Update SingleSelectionList component to handle shipping method selection designs

[rachelmcr]

Part of: #12578

Why

In #12614 I added a new view ShippingMethodSelector to use for selecting a shipping method during order creation/editing. In this PR, I'm removing that view in favor of using the reusable component SingleSelectionList.

This PR adds some styling options so SingleSelectionList can match the designs for selecting shipping methods, and it simplifies some of the view layout.

How

• Replaces the deprecated presentationMode environment variable with the dismiss environment variable.
• Updates the view to use a List component. This contains the expected padding, dividers, styling, and scrolling for the list.
• Adds parameters to determine whether to show the Done button and what background color to use behind the list. This retains the previous behavior as the default but allows the list to be customized for the shipping method selection.
• Removes the ShippingMethodSelector view as it's no longer needed.

Testing instructions

Screenshots

1. Build and run the app.
2. Open the analytics hub ("View all store analytics").
3. Tap the date range selector to open the date range selection list.
4. Confirm the list looks and act the same as before.
5. Rotate the device to landscape and confirm the list looks and act the same as before.

/	Portrait	Landscape
Before
After
After with new styling

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

[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	pr12651-ca228f6
	Version	18.5
	Bundle ID	com.automattic.alpha.woocommerce
	Commit	ca228f647e18969669587b217f74a6db9b47d846
	App Center Build	WooCommerce - Prototype Builds #8951

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