feat(ci): trigger tests on release PRs via GitHub App toke

[JiahuiWho]

What

1. This closes Consume Release GitHub App token in new-release.yml so release PRs trigger CI #882: Wires the pre-provisioned Freighter Mobile Release GitHub App into new-release.yml, in three places.
2. Also removes version branches (v*.*.*) from the push trigger of test.yml, ios-e2e.yml and android-e2e.yml. They remain in the pull_request trigger.

Why

1. Events created with the default GITHUB_TOKEN don't trigger other workflows, so the release and bump-version PRs opened by new-release.yml never started test.yml, ios-e2e.yml or android-e2e.yml.
2. The trigger change avoids the flip side of the fix. Once pushes carry the App token, a version branch fires both a push run and a pull_request run for the same commit. GitHub treats them as unrelated events and doesn't dedupe.

Note: the ops ticket specifies RELEASE_APP_ID as a repository variable, but it was provisioned as a secret, so this uses secrets.RELEASE_APP_ID.

Testing

Tested by dispatching this branch's new-release.yml against tag v1.20.27 (run): the App token minted, auto-triggered tests:

Test 30562543177
iOS E2E Tests 30562539889
Android E2E Tests 30562542302

Known limitations

• Creating the release branch still fires a full CI round (Test + both e2e) on a commit identical to main
• The push-trigger change can't be verified before merge

Checklist

PR structure

• This PR does not mix refactoring changes with feature changes (break it down into smaller PRs if not).
• This PR has reasonably narrow scope (break it down into smaller PRs if not).
• This PR includes relevant before and after screenshots/videos highlighting these changes.
• I took the time to review my own PR.

Testing

• These changes have been tested and confirmed to work as intended on Android.
• These changes have been tested and confirmed to work as intended on iOS.
• These changes have been tested and confirmed to work as intended on small iOS screens.
• These changes have been tested and confirmed to work as intended on small Android screens.
• I have tried to break these changes while extensively testing them.
• This PR adds tests for the new functionality or fixes.

Release

• This is not a breaking change.
• This PR updates existing JSDocs when applicable.
• This PR adds JSDocs to new functionalities.
• I've checked with the product team if we should add metrics to these changes.
• I've shared relevant before and after screenshots/videos highlighting these changes with the design team and they've approved the changes.

[github-actions]

iOS Simulator preview build is ready: https://github.com/stellar/freighter-mobile/releases/tag/untagged-b86afd863f214b6e5ae2 (SDF collaborators only — install instructions in the release description)

[Copilot]

Pull request overview

Uses a GitHub App token so automated release PRs trigger CI while avoiding duplicate version-branch runs.

Changes:

• Mints and persists the release automation token for pushes and PR creation.
• Removes version branches from push triggers while retaining PR triggers.

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated no comments.

File	Description
.github/workflows/new-release.yml	Uses the App token for checkout, pushes, and PR creation.
.github/workflows/test.yml	Excludes version branches from push-triggered tests.
.github/workflows/ios-e2e.yml	Excludes version branches from push-triggered iOS E2E.
.github/workflows/android-e2e.yml	Excludes version branches from push-triggered Android E2E.

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