[Order Editing] Show exit confirmation for unsynced changes in a split view

[staskus]

Closes: #14962

Description

Canceling an order edit in split view with unsynced changes doesn't request confirmation.

Solution

• Return false from canBeDismissed when the order is in a split-view and there are unsynced changes
• Do not delete the order when dismissing in the .editing flow

Steps to reproduce

On iPad

Unsynced changes

1. Orders
2. Edit Order
3. Change product selection
4. Tap Cancel
5. Confirm the alert appears (dismissing the alert results in recalculate issues fixed in github.com/woocommerce/woocommerce)

Synced changes

1. Orders
2. Edit Order
3. Change product selection
4. Tap Recalculate
5. Tap Cancel
6. Confirm the view is closed without an alert

Testing information

• Re-tested order creation, editing, and dismissing on an iPhone.
• Confirm order is resynced when other changes are made on right side in a split-view

Screenshots

Simulator.Screen.Recording.-.iPad.Air.11-inch.M2.-.2025-03-21.at.14.05.29.mp4

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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.

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[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	29034
	Version	PR #15394
	Bundle ID	com.automattic.alpha.woocommerce
	Commit	b4bda32
	Installation URL	6cuk5la381lbo

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

[joshheald]

Works well, thanks for this improvement.

Note that it doesn't totally finish fixing the issue though...

If you prevent the deletion, making an edit, tapping cancel, then continuing with the edit instead of discarding it breaks the Recalculate button (and I have no idea why...)

Repro is

1. Tap edit
2. Select another product
3. Tap cancel
4. Tap in the header area to dismiss the alert and stay on the order. (Using the header avoids accidentally selecting another product, which prevents repro.)
5. Tap recalculate – observe nothing happens.

I still think this should be merged, you can work around the issue by changing selection again.

[staskus]

@joshheald

If you prevent the deletion, making an edit, tapping cancel, then continuing with the edit instead of discarding it breaks the Recalculate button (and I have no idea why...)

This was fixed in another PR - #15392 since it was also reported in a separate issue. Sorry for not connecting them both in the description!