[Login] Allow login for WPCOM suspended sites

[selanthiraiyan]

Closes: #14196
Closes: #14255
Closes: #14256

Description

⚠️ Don't merge until wordpress-mobile/WordPressAuthenticator-iOS#858 is merged.

Adds code to allow login for WPCOM suspended sites. This logic is added behind a configuration flag in the authenticator library.

The enableSiteCredentialsLoginForWPCOMSuspendedSites configuration here will be enabled later once the rest of the tasks are completed.

Steps to reproduce

Prerequisites

• Create a JN site with Woo and Jetpack
• Connect Jetpack from wp-admin page
• Follow the steps to mark it as suspended in WPCOM. Internal - p1729584367490299/1729584240.840689-slack-C03L1NF1EA3
• Reach out to me or @hichamboushaba if you need help suspending a site.

Login into a suspended site

• Build and run the app
• Logout if needed
• Login into the app using the JN site
• Validate that you see the "Invalid URL" error
• Stop the app
• Set true for the enableSiteCredentialsLoginForWPCOMSuspendedSites configuration here
• Run the app
• Login into the app using the JN site
• You should be able to login into the app using .org site credentials
• Validate that you don't see the Jetpack banner in the dashboard.

WPCOM credentials login

• Follow the steps and mark the site as not suspended. (Remove flags) Internal - p1729584367490299/1729584240.840689-slack-C03L1NF1EA3
• Logout from the app.
• Try logging in using the same JN site.
• You should be navigated to WPCOM login flow and validate that WPCOM login works.

JN site .org credentials login

• Create a JN site with Woo and no Jetpack
• Logout from the app
• Login into the app using .org site credentials
• Validate that you see the Jetpack banner in the dashboard

Testing information

I tested the following scenarios.

• Suspended site's .org site credentials login works when enableSiteCredentialsLoginForWPCOMSuspendedSites configuration is set as true. The Jetpack banner is hidden.
• Normal site credentials login works as before. The Jetpack banner is displayed for eligible sites.
• Normal WPCOM credentials login works as before.

Screenshots

Suspended site

enableSiteCredentialsLoginForWPCOMSuspendedSites false	enableSiteCredentialsLoginForWPCOMSuspendedSites true

Dashboard - Jetpack banner of site without Jetpack when enableSiteCredentialsLoginForWPCOMSuspendedSites true

Normal JN site (without Jetpack)	Suspended JN site

---

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

Reviewer (or Author, in the case of optional code reviews):

Please make sure these conditions are met before approving the PR, or request changes if the PR needs improvement:

• The PR is small and has a clear, single focus, or a valid explanation is provided in the description. If needed, please request to split it into smaller PRs.
• Ensure Adequate Unit Test Coverage: The changes are reasonably covered by unit tests or an explanation is provided in the PR description.
• Manual Testing: The author listed all the tests they ran, including smoke tests when needed (e.g., for refactorings). The reviewer confirmed that the PR works as expected on all devices (phone/tablet) and no regressions are added.

[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	pr14257-bcf1634
	Version	20.9
	Bundle ID	com.automattic.alpha.woocommerce
	Commit	bcf1634
	App Center Build	WooCommerce - Prototype Builds #11367

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

[hichamboushaba]

Nice work @selanthiraiyan, the logic works well.

There are just two points that needs addressing before approving the PR, the unit tests are failing, and the "Install jetpack" button is still shown in the app settings.

[hichamboushaba]

Just a question for my learning, do we have any guidelines on where to use UserDefaults vs something like GeneralAppSettings in the app? in the custom fields project, I used GeneralAppSettings, and it needed a lot of boilerplate to my liking, so I'm not sure if I should've used UserDefaults instead 😅

[hichamboushaba]

We need a similar logic for the app settings to hide the "Install Jetpack" button.