Build React Native Android E2E APK artifact

[kieran-osgood-shopify]

Stack Context

This is Phase 3 of the BrowserStack Maestro E2E stack for Checkout Kit, stacked on the Bitrise skeleton.

Parent issue: https://github.com/shop/issues-checkout-kit/issues/1097
Epic: https://github.com/shop/issues-checkout-kit/issues/1084

What?

Replaces the React Native Android placeholder artifact workflow with a real APK build path:

• installs JS dependencies with pnpm
• prepares sanitized sample app configuration via scripts/setup_storefront_env
• builds the React Native module
• runs ./gradlew assembleDebug for the sample app
• exports E2E_REACT_NATIVE_ANDROID_APP_PATH to the debug APK
• documents required Bitrise environment values
• adds tests asserting the Android workflow does not use local native SDK overrides

Why?

BrowserStack App Automate needs a concrete .apk artifact. RN E2E should validate the released native Maven artifact versions used by the React Native sample/module configuration, not local in-repo native SDK overrides.

Validation

shadowenv exec -- ruby e2e/test/bitrise_pipeline_test.rb
shadowenv exec -- ruby e2e/test/e2e_matrix_test.rb
shadowenv exec -- ruby e2e/scripts/e2e_matrix validate

[kieran-osgood-shopify]

Warning

This pull request is not mergeable via GitHub because a downstack PR is open. Once all requirements are satisfied, merge this PR as a stack on Graphite.
Learn more

• Soft-launch E2E PR checks #364
• Report E2E results to GitHub #363
• Run BrowserStack Maestro from E2E matrix rows #362
• Build React Native iOS E2E IPA artifact #361
• Build React Native Android E2E APK artifact #360 👈 (View in Graphite)
• Add Bitrise E2E pipeline skeleton #357
• Add E2E matrix launch smoke foundation #356
• main

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