Add Fastlane session restoration post payment failure (5032)

[danieldudzic]

Description

This PR will add Fastlane session restoration after payment failures for both Block and Classic checkouts.

It ensures customers have their Fastlane data pre-loaded after returning to the checkout page in the case of a payment failure.

Screenshots

Steps to test

1. In PayPal Payments > Settings > Expert Settings > 3D Secure select Always require 3D Secure
2. In Checkout authenticate with any Fastlane profile, add a new card - using one of the Failure test case card details
3. Confirm that after the failed payment you return to the relevant checkout page with a failure notice on top and after a few seconds the Fastlane profile data automatically loads again.

[github-actions]

Test using WordPress Playground

The changes in this pull request can be previewed and tested using a WordPress Playground instance.
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What's included:

• ✅ WordPress (latest)
• ✅ WooCommerce (latest)
• ✅ PayPal Payments plugin v3.0.9-pr3598-17007756440-g36ccec0 (built from this PR)

Login credentials:

• Username: admin
• Password: password

Plugin Details:

• Version: 3.0.9-pr3598-17007756440-g36ccec0
• Commit: 36ccec0
• Artifact: woocommerce-paypal-payments-3.0.9-pr3598-17007756440-g36ccec0

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[Narek13]

Haven't tested but code wise LGTM