feat: add workflow dispatch for release creation

[kieran-osgood-shopify]

What?

Adds a guided Release package workflow for iOS and Android releases.

The workflow:

• Reads the selected SDK version from checked-in source files.
• Treats the manually entered version as a confirmation guard only.
• Validates X.Y.Z and X.Y.Z-{alpha|beta|rc}.N formats.
• Creates the correct tag shape:
  • iOS: X.Y.Z
  • Android: android/X.Y.Z
• Defaults to dry-run=true and draft=true for a safe release preview/review flow.
• Adds publish-workflow validation so direct/manual release tags must still match SDK versions before publishing.

React Native publishing has intentionally been split into the follow-up stacked PR.

How to test

Local verification run:

bash -n .github/scripts/validate-release-version
.github/scripts/validate-release-version iOS 3.8.0 3.8.0
.github/scripts/validate-release-version Android 1.0.0 android/1.0.0
/tmp/checkout-kit-bin/actionlint \
  .github/workflows/release.yml \
  .github/workflows/swift-publish.yml \
  .github/workflows/android-publish.yml

Also verified React Native is not selectable/supported in this PR's release helper.

[kieran-osgood-shopify]

• feat: add React Native release publishing #192
• feat: add workflow dispatch for release creation #191 👈 (View in Graphite)
• main

This stack of pull requests is managed by Graphite. Learn more about stacking.

[github-actions]

React Native — Coverage Report

Lines	Statements	Branches	Functions
	96.76% (239/247)	91.02% (142/156)	100% (64/64)

[kieran-osgood-shopify]

Merge activity

• May 22, 4:19 PM UTC: @kieran-osgood-shopify merged this pull request with Graphite.