Post-purchase Migration Experience: Show front-end banner for pending or in-progress migrations

[donnapep]

Description

Display a banner on the front-end if a logged in user tries to view their new site, but the migration hasn't started yet or is in-progress. The CTA should go to the Sites dashboard.

Migration Pending

A banner is displayed if the site has any of the following blog stickers:

• pending-migration
• pending-migration-diy
• pending-migration-difm

Migration Started

A different banner is displayed if the site has any of the following blog stickers:

• migration-started-diy
• migration-started-difm

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[Imran92]

Diff published D164000-code