chore(INFRA-3591): [TEST RUN - React Native Cache] Bitrise temp iOS workflow

[bsgrigorov]

Description

[TEST RUN - React Native Cache] — Same Bitrise runner POC as INFRA-3591, with temp-bitrise-ios-e2e.yml updated to use Bitrise React Native Build Cache (CLI activate + bitrise-build-cache react-native run around yarn build:ios:main:e2e) instead of coarse Xcode DerivedData actions/cache restores. iOS E2E smoke job remains commented out (build-only benchmark).

Changelog

CHANGELOG entry: null

Related issues

Fixes:

Manual testing steps

• Apply bitrise-poc label (already on PR) and confirm [TEMP] Bitrise iOS E2E POC workflow runs on Bitrise runners.
• Confirm build completes and simulator .app artifact uploads; optional: compare timings vs KV-cache baseline PR.

Screenshots/Recordings

Before

After

Pre-merge author checklist

• I’ve followed MetaMask Contributor
  Docs and [MetaMask Mobile
  Coding
  Standards](https://github.com/MetaMask/metamask-mobile/blob/main/.github/guid
  elines/CODING_GUIDELINES.md).
• I've completed the PR template to the best of my ability
• I’ve included tests if applicable
• I’ve documented my code using JSDoc format
  if applicable
• I’ve applied the right labels on the PR (see [labeling
  guidelines](https://github.com/MetaMask/metamask-mobile/blob/main/.github/gui
  delines/LABELING_GUIDELINES.md)).
  Not required for external contributors.

Pre-merge reviewer checklist

• I've manually tested the PR (e.g. pull and build branch, run the
  app, test code being changed).
• I confirm that this PR addresses all acceptance criteria described
  in the ticket it closes and includes the necessary testing evidence such
  as recordings and or screenshots.

[github-actions]

CLA Signature Action: All authors have signed the CLA. You may need to manually re-run the blocking PR check if it doesn't pass in a few minutes.

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Cursor Bugbot has reviewed your changes and found 1 potential issue.

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[cursor]

New workflow uses deprecated v4 GitHub Actions

Low Severity

The new temp-bitrise-ios-e2e.yml workflow uses actions/checkout@v4 (line 74) and actions/upload-artifact@v4 (lines 320, 331). The team requires v6+ for all official actions/* GitHub Actions because v4 runs on the node20 runtime, which is being deprecated by GitHub. Both actions/checkout@v6 (v6.0.2, Jan 2026) and actions/upload-artifact@v6 (v6.0.0, Dec 2025) are available.

Additional Locations (2)

• .github/workflows/temp-bitrise-ios-e2e.yml#L319-L320
• .github/workflows/temp-bitrise-ios-e2e.yml#L330-L331

 

^{Triggered by learned rule: Use GitHub Actions v6+ instead of v4 — node20 runtime is deprecated}

^{Reviewed by Cursor Bugbot for commit 76bdab2. Configure here.}