[WAL-752] test: stabilize Android Digital Credentials E2Es

[szijpeter]

Summary

Stabilize the Android DC API sharing E2Es without weakening their end-to-end coverage, and make the dedicated API 37 Play Store test environment reproducible.

What changed

• Live-issue the canonical mDL and SD-JWT once per suite through MobileWallet, then reuse and verify that shared state across presentation tests.
• Replace the global verifier handoff with request-scoped handles and lifecycle-bound platform calls, with explicit cleanup for completion, cancellation, back/re-entry, and Activity destruction.
• Make picker interaction state-driven and fail with focused diagnostics instead of relying on stale UI state or cross-test cleanup.
• Add a real Credential Manager/GMS platform smoke gate and require instrumentation results, so a setup failure cannot be reported as a passing zero-test lane.
• Cold-boot and cache a validated API 37 / Pixel 7 / Play Store AVD. The lane fingerprints the emulator, platform-tools, system image, AVD config, device build, page size, GMS version/code, and preparation scripts, and rejects stale or mismatched cache state.
• Exclude the class-level GMS-gated sharing suite from the default API 34 compose-demo lane and run it in the dedicated Play Store lane.
• Run the now-enabled SCA + EU age presentation case in the stabilized DC API lane.

Caveats and follow-ups

• The dedicated lane remains tied to the current API 37 Play Store / x86_64 emulator substrate and its pinned package revisions; a platform upgrade should change the cache identity and baseline together.

Breaking

None.

[linear-code]

WAL-752

[coderabbitai]

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[szijpeter]

Reopening immediately to trigger restored CI on the cleaned main-based SHA; the PR remains draft.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud