fix(android-sample): let a guest cart take the shop market

[kieran-osgood-shopify]

TLDR

Android sample diverges from other samples by giving a guest cart a hardcoded Canadian buyer identity.
I'm removing the hardcode.

- buyerIdentity = Optional.present(CartBuyerIdentityInput(countryCode = Optional.present(CountryCode.CA)))
+ buyerIdentity = Optional.Absent

Why

A country on the buyer identity picks the market. The market decides the currency, the address form, and the labels on its fields. So the Android sample rendered a Canadian checkout, while the shared E2E fixture types a United States address.

This was detected as a fault in some of the tests

`e2e/FLAKES.md`: `checkout-guest` failed on Kotlin Android at
`Scrolling DOWN until "Country/Region" is visible`, and passed on React Native Android.

React Native also skipped the country picker step, because United States was already selected. The Kotlin failure screenshot shows a total in CAD.

Scope

This change is scoped to

• Sample app
• Guest path

[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

• fix(e2e): dismiss only an enabled element on iOS #574
• fix(android-sample): let a guest cart take the shop market #570 👈 (View in Graphite)
• feat(e2e): add the customer account checkout test on all four targets #562 : 1 other dependent PR (#580 )
• feat(e2e): add the guest checkout order test on all four targets #561 : 1 other dependent PR (#599 )
• feat(e2e): add the hardcoded buyer identity order test on all four targets #560
• feat(e2e): add the present-and-close checkout test on all four targets #559
• feat(e2e): add the cart-from-control-link test on all four targets #558
• Replace the E2E suite cross product with Maestro tags in CI #557
• feat(e2e): select tests by Maestro tag instead of scenario flags #556
• feat(e2e): add an E2EController to each sample app #555
• Add the E2E control link parser to all four sample apps #554
• Add sample app test seams and run them in CI #553
• main

This stack of pull requests is managed by Graphite. Learn more about stacking.

[github-actions]

Package Size

Platform	Artifact	Base	Head	Delta
Android	release AAR	281.8 KiB	281.8 KiB	0 B

Android file breakdown

File	Base	Head	Delta
classes.jar	297.7 KiB	297.7 KiB	0 B
res/layout/checkout_view_content.xml	2.6 KiB	2.6 KiB	0 B
res/layout/checkout_sheet_content.xml	2.0 KiB	2.0 KiB	0 B
res/values/values.xml	1.3 KiB	1.3 KiB	0 B
R.txt	1.2 KiB	1.2 KiB	0 B
AndroidManifest.xml	922 B	922 B	0 B
proguard.txt	798 B	798 B	0 B
res/drawable/close.xml	431 B	431 B	0 B
res/menu/checkout_menu.xml	354 B	354 B	0 B
META-INF/com/android/build/gradle/aar-metadata.properties	157 B	157 B	0 B

Measured from the PR base SHA and PR head SHA. The file breakdown shows uncompressed sizes within each package artifact, so individual files do not sum to the compressed artifact total. This comment reports package artifact sizes only; it is not a final app binary-size report.

[bitrise]

Install this build

Open Tophat, select your target device, then click Install. Links open on the Mac running Tophat.

SDK	Install
Kotlin	Install with Tophat

Checkout Kit E2E results

Status	Tags	Target	Platform	OS version tag	Device
❌	launch, checkout, account	kotlin	android	latest	Google Pixel 9 Android 17.0

Failures

Caution

These E2E checks are not yet required, so they do not block merging — but a failure may still indicate a real issue to resolve before merging.
If you believe an assertion is flaky, please raise a ticket in the #checkout-kit-devs channel so it can be addressed.

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Android — kotlin

Test	Status	Artifacts
./tests/shared/checkout-guest	❌	BrowserStack · Video · Screenshot · Maestro commands · Maestro log