chore(test): e2e test for test-tabs-bottom-accessory-visibility-ios

[LKuchno]

Description

Closes: https://github.com/software-mansion/react-native-screens-labs/issues/1745

Adds Detox e2e coverage for the iOS bottomAccessoryHidden prop on TabsHost, covering the end state of each step of the test-tabs-bottom-accessory-visibility-ios scenario on iPhone.

Both hidden (bottomAccessoryHidden) and rendered (bottomAccessory set / undefined) remove the accessory from the native hierarchy, so presence is asserted the same way for both and cross-checked against the tab bar: the tab item pill (_UITabButton) spans the accessory's width while one is attached and shrinks back once it is gone (checked relatively, no hardcoded constants).

bottomAccessory only exists on iOS 26+, so both bottom-accessory suites now run only there: a shared describeIfiOS26 / describeIfiPadIOS26 in e2e-utils (isIOSVersionAtLeast('26.0')) skips them on older iOS and on Android.

Animation quality (smooth slide out/in, no blank frame) stays manual - Detox samples settled state, not animation frames.

Changes

• New spec FabricExample/e2e/single-feature-tests/tabs/test-tabs-bottom-accessory-visibility-ios.e2e.ts - one it per scenario step: baseline, hidden on/off, rendered off/on, and the combined hidden + rendered sequence.
• FabricExample/e2e/e2e-utils.ts: added describeIfiOS26 and describeIfiPadIOS26.
• test-tabs-bottom-accessory-layout-ios.e2e.ts: iPhone and @ipad suites switched to the iOS 26+ gates.
• Test screen index.tsx: added testIDs only (bottom-accessory-visibility-scrollview, rendered-switch, hidden-switch, bottom-accessory-text).
• scenario.md: ## E2E test section states the coverage split; scenario-description.ts: e2eCoverage → 'incomplete'.

[Copilot]

Pull request overview

Adds iOS 26+ Detox coverage for TabsHost bottom accessory visibility and updates related test gating and documentation.

Changes:

• Added end-state tests for hidden and rendered accessory transitions.
• Gated bottom-accessory suites to iOS 26+.
• Added test IDs and updated coverage documentation.

Reviewed changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
FabricExample/e2e/single-feature-tests/tabs/test-tabs-bottom-accessory-visibility-ios.e2e.ts	Adds visibility E2E tests
FabricExample/e2e/single-feature-tests/tabs/test-tabs-bottom-accessory-layout-ios.e2e.ts	Applies iOS 26+ gating
FabricExample/e2e/e2e-utils.ts	Adds shared iOS 26 suite gates
apps/src/tests/single-feature-tests/tabs/test-tabs-bottom-accessory-visibility-ios/scenario.md	Documents E2E coverage
apps/src/tests/single-feature-tests/tabs/test-tabs-bottom-accessory-visibility-ios/scenario-description.ts	Marks coverage incomplete
apps/src/tests/single-feature-tests/tabs/test-tabs-bottom-accessory-visibility-ios/index.tsx	Adds Detox test IDs

Suppressed comments (1)

FabricExample/e2e/e2e-utils.ts:44

• This description does not match the gate: isIOSVersionAtLeast('26.0') skips every iOS version below 26, including iOS 19–25, not only iOS 18 and older. Please update the comment so the documented supported/skip range is accurate.

 * Suites for iOS 26+-only features (e.g. `bottomAccessory`, the header overflow
 * button). `isIOSVersionAtLeast` is false on Android, so these stay iOS-only
 * and additionally self-skip on iOS 18 and older.

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