fix: seeds query cache in success loader

[brobro10000]

This pull request updates the checkout stepper loader logic to improve how we verify and fetch the current checkout intent and related data. The changes ensure users are redirected appropriately if the checkout intent is missing or incomplete, and additional queries are run for more robust state validation.

Key improvements to checkout intent validation and data fetching:

• Added additional queries to fetch both success state (queryBffSuccess) and intent details (queryCheckoutIntent) when a checkout intent exists, ensuring the loader has the latest and most accurate data. [1] [2]
• Improved the redirect logic: now, if there is no checkoutIntent or if the intent is not in a successful state (either missing the existingSuccessfulCheckoutIntent flag or the status type is not 'complete'), the user is redirected to the Plan Details page to restart the process. This makes the flow more robust and prevents users from proceeding with incomplete or invalid checkout sessions.

[Copilot]

Pull Request Overview

This pull request improves the checkout stepper loader's validation logic to ensure users have valid checkout sessions before accessing success pages. The changes add more robust data fetching and redirect logic to prevent incomplete checkout flows.

• Enhanced data fetching by adding queries for success state and checkout intent details
• Improved redirect logic to check both checkout intent existence and completion status
• Added explicit validation to ensure checkout intents are in successful states

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