Convert Shopper BNPL Checkout spec

[ismaeldcom]

Fixes #10060

Changes proposed in this Pull Request

• Modify shopper utils to implement expectFraudPreventionToken and selectPaymentMethod and update setupProductCheckout.
• Refactor affected tests by setupProductCheckout update.
• Implement Playwright shopper-bnpls-checkout spec
• Remove Puppeteer shopper-bnpls-checkout spec

Testing instructions

• Checkout dev/10060-convert-shopper-bnpls-checkout-spec
• Run npm run test:e2e-pw bnpls
• Test should pass locally.
• Test should pass in GH actions.

---

• Run npm run changelog to add a changelog file, choose patch to leave it empty if the change is not significant. You can add multiple changelog files in one PR by running this command a few times.
• Covered with tests (or have a good reason not to test in description ☝️)
• Tested on mobile (or does not apply)

Post merge

• Link to testing instructions from release testing doc following these instructions : QA Testing Not Applicable
• Add or update critical flows and testing instructions for critical flows, if applicable.
• Add what's changed (description, screenshot, demo videos etc.) to the release announcement post, if applicable.

[tpaksu]

Thanks for working on this, and adding the extra card testing prevention check helpers! It works good both on GH actions, and locally (I needed to reset my containers to reach to a clean state, maybe one of my tests forgot the shop currency as EUR, and the local tests failed because of that). LGTM, we can 🚢 it.