[Domain Purchase] Update final UI strings

[alpavanoglu]

This PR matches the strings to the Android Implementation

To test:

• Enable Site Creation Feature Flag

Paid Domain

• Install Jetpack and log in.
• Head to "My Site" > "Chevron Down" button to display "My Sites" screen.
• Tap "+" button, then "Create WordPress.com site"
• Go through the flow until your reach the "Choose a domain" screen.
• Search for a domain and select a PAID domain.
• Tap "Create Site."
• Title, description and footer should match to the strings in screenshot from Android PR linked above.

Free Domain

• Install Jetpack and log in.
• Head to "My Site" > "Chevron Down" button to display "My Sites" screen.
• Tap "+" button, then "Create WordPress.com site"
• Go through the flow until your reach the "Choose a domain" screen.
• Search for a domain and select a FREE domain.
• Tap "Create Site."
• Title, description and footer should match to the strings in screenshot from Android PR linked above.

Regression Notes

1. Potential unintended areas of impact
   N/A

2. What I did to test those areas of impact (or what existing automated tests I relied on)
   N/A

3. What automated tests I added (or what prevented me from doing so)
   N/A

PR submission checklist:

• I have completed the Regression Notes.
• I have considered adding unit tests for my changes.
• I have considered adding accessibility improvements for my changes.
• 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 WordPress Alpha by scanning the QR code below to install the corresponding build.

	App Name	WordPress Alpha
	Configuration	Release-Alpha
	Build Number	pr20614-b898eab
	Version	22.2
	Bundle ID	org.wordpress.alpha
	Commit	b898eab
	App Center Build	WPiOS - One-Offs #5617

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[wpmobilebot]

📲 You can test the changes from this Pull Request in Jetpack Alpha by scanning the QR code below to install the corresponding build.

	App Name	Jetpack Alpha
	Configuration	Release-Alpha
	Build Number	pr20614-b898eab
	Version	22.2
	Bundle ID	com.jetpack.alpha
	Commit	b898eab
	App Center Build	jetpack-installable-builds #4644

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[salimbraksa]

I want to point out that this logic shows the "Paid" copy for free domains. I think you meant this:

if let isFreeDomain = isFreeDomain {
    return !isFreeDomain
}

Also, if isFreeDomain is not optional and false, the shouldShowDomainPurchase will be true without taking into consideration the feature flag and AB test conditions in siteCreator.shouldShowDomainCheckout. To fix that, I think we can do the following:

if isFreeDomain == true {
    return false
}

This code means to return shouldShowDomainPurchase == false only if the domain is free. But if it's paid, the siteCreator.shouldShowDomainCheckout should be executed instead.

[salimbraksa]

nit: perhaps we should add some space between isFreeDomain and shouldShowDomainPurchase.

[salimbraksa]

LGTM! 🚀