Vault V2/V3 separation (5494)

[Dinamiko]

Several modules currently support both versions with conditional logic. This refactoring will separate V2-specific code from hybrid modules into dedicated VaultV2 namespaces, making it easier to eventually remove all V2 support.

[github-actions]

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What's included:

• ✅ WordPress (latest)
• ✅ WooCommerce (latest)
• ✅ PayPal Payments plugin v3.2.1-pr3816-18847660400-g2608cf3 (built from this PR)

Login credentials:

• Username: admin
• Password: password

Plugin Details:

• Version: 3.2.1-pr3816-18847660400-g2608cf3
• Commit: 2608cf3
• Artifact: woocommerce-paypal-payments-3.2.1-pr3816-18847660400-g2608cf3

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_{🤖 Auto-generated for commit 2608cf3 • Last updated: 2025-10-27T16:13:40.140Z}