Show close button when external token is expired

[etoledom]

Closes #

Description

This PR fixes an issue where, when an external token is expired, the SDK would try to re-authenticate the user. Now it will prompt the user to close the QE instead.

https://github.com/user-attachments/assets/72fd7607-8220-4941-be5d-400e3b045bd8

Testing Steps

• Open UIKit demo app.
• Go to Quick Editor screen.
• Tap on Log out button if it's present.
• Introduce an expired (or wrong) token.
• Open the Quick Editor.
  • Check that the action button says Close .
  • Check that the Quick Editor is closed after taping on Close button.

[wpmobilebot]

📲 You can test the changes from this Pull Request in Gravatar UIKit Prototype Build by scanning the QR code below to install the corresponding build.

	App Name	Gravatar UIKit Prototype Build
	Build Number	1500
	Version	1.0
	Bundle ID	com.automattic.gravatar-sdk-demo-uikit.prototype-build
	Commit	6681b9a0aa8415b5cb0f4ad9ff4b99a0a71c7b03
	App Center Build	Gravatar SDK Demo - UIKit #271

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

[wpmobilebot]

📲 You can test the changes from this Pull Request in Gravatar SwiftUI Prototype Build by scanning the QR code below to install the corresponding build.

	App Name	Gravatar SwiftUI Prototype Build
	Build Number	1500
	Version	1.0
	Bundle ID	com.automattic.gravatar-sdk-demo-swiftui.prototype-build
	Commit	6681b9a0aa8415b5cb0f4ad9ff4b99a0a71c7b03
	App Center Build	Gravatar SDK Demo - SwiftUI #271

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