feat(release): report live version strings in ios latest_builds
A bare build number cannot decide the next one on iOS. Apple scopes
CFBundleVersion uniqueness to the CFBundleShortVersionString train, so
"build 8 exists" only blocks a release that reuses the same version
string -- and the lane previously reported the number with no way to
tell which train it belonged to.
Surfaces that App Store is live on 1.0.6+8 while Play production is on
1.0.5+7: the two platforms had already drifted apart, and pubspec.yaml
was behind both.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>