Fix React Native Swift lint CI parity

[kyle-schellen]

What changed

• Updates React Native lint CI so SwiftLint targets the RN Swift bridge with the RN SwiftLint config.
• Adds a Mint-backed RN Swift lint/format CI check that runs the same ./scripts/lint_swift check entrypoint as local dev.
• Excludes SwiftPM .build output from RN SwiftLint/SwiftFormat.
• Applies the RN Swift lint/format fixes surfaced by the pinned toolchain.

Why

dev rn lint swift was catching RN Swift issues locally that CI was not catching. CI was running SwiftLint from the repo root with the root Swift config, and SwiftFormat was not running against the RN Swift bridge in CI.

How to test

• dev rn lint swift
• dev check

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Before you merge

Important

• I've added tests to support my implementation
• I have read and agree with the Contribution Guidelines
• I have read and agree with the Code of Conduct
• I've updated the relevant platform README (platforms/swift/README.md and/or platforms/android/README.md)

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Releasing a new Swift version?

• I have bumped the version in ShopifyCheckoutKit.podspec
• I have bumped the version in platforms/swift/Sources/ShopifyCheckoutKit/ShopifyCheckoutKit.swift
• I have updated platforms/swift/CHANGELOG.md
• I have updated the SwiftPM/CocoaPods version snippets in platforms/swift/README.md (major version only)

Releasing a new Android version?

• I have bumped the versionName in platforms/android/lib/build.gradle
• I have updated platforms/android/CHANGELOG.md
• I have updated the Gradle/Maven version snippets in platforms/android/README.md

Tip

See the Contributing documentation for the full release process per platform.

[kyle-schellen]

Warning

This pull request is not mergeable via GitHub because a downstack PR is open. Once all requirements are satisfied, merge this PR as a stack on Graphite.
Learn more

• Fix React Native Swift lint CI parity #225 👈 (View in Graphite)
• Add repo setup orchestration commands #176 : 1 other dependent PR (#177 )
• Centralize sample storefront configuration #175
• Align workspace dev commands in root dev.yml #69
• Move React Native dev commands under root dev.yml #64
• Move Swift dev commands under root dev.yml #36
• Move Android dev commands under root dev.yml #35
• main

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

[github-actions]

React Native — Coverage Report

Lines	Statements	Branches	Functions
	91.59% (316/345)	87.25% (178/204)	100% (82/82)

[Juanita-Dash]

LGTM