GooglePay web request config passthrough batch

[ana-maksimovskikh]

First of a few PRs with request-config updates (split for easier code reviews).
I'll submit them as a stack with one changeset at the end. All changes non breaking - so minor version bump would do.

https://linear.app/evervault/issue/CARD-1059/d-google-pay-web-request-config-passthrough-batch

PR1 added 6 fields, all flowing through the same passthrough (types → browser → ui-components types → buildPaymentRequest):

• checkoutOption — transactionInfo.checkoutOption (e.g. "COMPLETE_IMMEDIATE_PURCHASE" to show "Pay" instead of "Continue" on the sheet)
• transactionId — transactionInfo.transactionId, for fraud correlation
• totalPriceStatus — now configurable ("ESTIMATED" / "NOT_CURRENTLY_KNOWN" / "FINAL"), was hardcoded to "FINAL" before
• allowPrepaidCards / allowCreditCards — on CardParameters (two fields, bundled together since they're structurally identical booleans)
• softwareInfo — merchantInfo.softwareInfo
• category on TransactionLineItem (shared type, not Google-Pay-specific) — maps to displayItems[].type ("line_item" / "subtotal" / "tax" / "discount" / "shipping_option"), was hardcoded to "LINE_ITEM" before

External docs: https://github.com/evervault/docs/pull/869

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