Updates Android SDK to 23.8.0 + CryptoOnramp SDK EU Support (#2441)

* Temporary changes to use local branch for Stripe iOS SDK

* Updates imports from iOS SDK changes as desired

* Adds checkout-related updates to satisfy the build for this test

* Adds @_spi(ReactNativeSDK) import on StripePaymentSheet due to request at https://github.com/stripe/stripe-ios/pull/6401#discussion_r3190872972

* Updates to latest iOS `master`

* `@_spi(CheckoutSessionsPreview)` → `@_spi(ReactNativeSDK)` where needed

* iOS: Exposes APIs for CryptoOnramp EU support

* RN: Exposes APIs for CryptoOnramp EU support

* Updates to the real release version

* Updates iOS SDK to 25.14.0

* iOS SDK adjustments for new version

* Android SDK update

* Simplifies StripePaymentSheet imports

* Removes additional `EmbeddedPaymentElementPrivateBeta` and `CustomerSessionBetaAccess` imports

* Fixes e2e paymentsheet tests with new accessibility label

* Adds additional mapper tests for iOS

* Fixes some android test failures, adds RN UI for EU onramp changes

* Change sample error message

* Adds KYC input for new fields

* Updates CHANGELOG to include adapted SDK changes

* Result of `yarn api-extractor:update`

* Fixes failing iOS e2e test

* Reverts new imports beyond the root public import in example app

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Co-authored-by: Twig <aharris.1990@gmail.com>