Onboarding: Domains: Inaccurate pricing while removing domains

[p-jackson]

Similar to #101839, when you remove a domain from the mini cart, it displays an incorrect price temporarily while the API request is happening.

CleanShot.2025-03-26.at.21.50.58.mp4

[github-actions]

OpenAI suggested the following labels for this issue:

• [Feature Group] Emails & Domains: The issue pertains to the management and pricing of domains, which falls under the domain management feature group.
• [Feature] Domain Management: This issue specifically addresses the problem of incorrect pricing related to domain removal.
• [Feature] Checkout: The issue involves the pricing displayed during the checkout process, which is impacted by the domain removal action.

[github-actions]

This issue could use some more labels, to help prioritize and categorize our work. Could you please add at least a [Type], a [Feature], and a [Pri] label?