[Bookings][Part 6] Booking cancellation dialogue and currency formatting

[RafaelKayumov]

Part of: WOOMOB-1236

Description

• Adds booking cancellation dialogue alert. No data binding / action yet.
• Adds currency formatting for "Appointment details" and "Price" sections. Uses new currency field from Booking.
• Renames "Mark as refunded" -> "Issue refund". And temporarily hardcodes the "Issue refund" action to be shown.

Testing steps

• Use a CIAB site with existing bookings.
• Go to bookings tab.
• Select a booking.
• In "Appointment details" section tap on "Cancel booking" button.
• Make sure the alert dialogue looks ok, title and formatted message match show correct content.
• Make sure prices in "Appointment details" and in "Price" sections have the correct currency symbol.
• To double-check price symbols - manually hardcode some other currency code string in Booking.swift on line 101. Navigate to a booking details after and make sure the corresponding currency symbol is presented.
• Make sure that the "Issue refund" CTA is presented in "Payments" section.

Testing information

Tested on iOS 26 iPhone 17 and iPad simulators.

Screenshots

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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.

[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	pr16209-4823ccd
	Version	23.4
	Bundle ID	com.automattic.alpha.woocommerce
	Commit	4823ccd
	Installation URL	215snmu5952m0

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

[itsmeichigo]

LGTM

[itsmeichigo]

Nit: the text color in the yellow badge may need to be changed in dark mode for better readability.

[RafaelKayumov]

Nit: the text color in the yellow badge may need to be changed in dark mode for better readability.

Thx for noticing. I'll work on it under a separate issue: WOOMOB-1434