[Bookings] Apply customer data to header

[RafaelKayumov]

Part of: WOOMOB-1426

Description

This is a continuation PR for the [Bookings] Customer data for Booking Details. Applies Customer data to Booking Details header.

Testing steps

• Use a testing CIAB site with bookings
• Navigate to Bookings tab
• Locate a booking that contains a customer with non-empty readable first name / last name.
• Select the booking and navigate to details view.
• Make sure the correct customer name and last name is displayed in header section among with service name.
• Locate a booking that doesn't have a customer / Or simulate this condition by setting customerID to 0 in bookings - response by using Proxyman.
• Select the booking and navigate to details view.
• Make sure the header doesn't contain the customer name/last name.

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	pr16226-c5573ee
	Version	23.4
	Bundle ID	com.automattic.alpha.woocommerce
	Commit	c5573ee
	Installation URL	6cqnqbqva25p8

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

[itsmeichigo]

LGTM

[itsmeichigo]

Nit: Similar comment as in the previous PR about importing Networking models. Yosemite is the preferred module to import models from.

[RafaelKayumov]

Updated in c5573ee