[testableapple]

Ticket: https://linear.app/stream/issue/RN-513

🎯 Goal

Run the 9 GiphyTests cases on Android again. They became iOS-only (itOnIOS) because loading giphy media sometimes took the whole Android CI emulator down.

🛠 Implementation details

• RN-513 was recorded with -gpu swiftshader_indirect. CI has used -gpu swangle_indirect since ci(e2e): fix nightly reporting and stabilize the iOS suite #3965, and the giphy tests no longer take the emulator down with it (see Testing).
• GiphyTests: itOnIOS → it. This removes itOnIOS, which only these tests used, and its mentions in the e2e README and the Fastfile's test-id regex.
• assertMessageDeliveryStatus(NIL) now looks only inside the list's message cells. Since RN-493, a thread shows its parent message's delivery status, and the parent renders outside any cell (ThreadFooterComponent). The old whole-list check failed test_deliveryStatusHidden_whenEphemeralMessageShownInThread on Android every time, on the parent's ✓, not the giphy's. The same cause likely explains its occasional iOS failures (nightly 42943115860). Checks that expect a status still see the parent.

🧪 Testing

• Stress runs (Android, GiphyTests only, 8 batches each, so every batch starts with a giphy test): 6 runs, 48 batches, 0 emulator losses. With SwiftShader, 1–2 of 8 batches per run lost the emulator.
  • Before the assertion fix: 43078664001, 43082371465, 43083731094, 43084926869. Only the in-thread test failed.
  • After the fix: 43086749991, 43087759886. Everything passed.
• Full suite on this PR: 43086744717, all 8 Android batches green.
• The stress selection was a temporary commit, reverted in the last commit, so the net diff doesn't touch it.
• yarn typecheck (E2ETestApp), eslint and prettier pass on the changed files.

☑️ Checklist

• I have signed the Stream CLA (required)
• PR targets the develop branch
• Documentation is updated
• New code is tested in main example apps, including all possible scenarios
  • SampleApp iOS and Android
  • Expo iOS and Android