Add healthRequest to common layer

[aboedo]

Summary

• Add healthRequest to CommonFunctionality.swift (iOS) using Task<Void, Never> async bridge pattern
• Add healthRequest to common.kt (Android) with OnResult callback pattern
• Bridges the native SDK's healthRequest for use by hybrid SDKs (React Native, Flutter, etc.)

Test plan

• Verify iOS common layer compiles with updated purchases-ios dependency
• Verify Android common layer compiles with updated purchases-android dependency
• End-to-end test through a hybrid SDK

🤖 Generated with Claude Code

[RevenueCat-Danger-Bot]

	1 Error
🚫	Label the PR using one of the change type labels. If you are not sure which label to use, choose pr:other.

Label	Description
pr:feat	A new feature. Use along with pr:breaking to force a major release.
pr:fix	A bug fix. Use along with pr:force_minor to force a minor release.
pr:other	Other changes. Catch-all for anything that doesn't fit the above categories. Releases that only contain this label will not be released. Use along with pr:force_patch, or pr:force_minor to force a patch or minor release.
pr:RevenueCatUI	Use along any other tag to mark a PR that only contains RevenueCatUI changes
pr:next_release	Preparing a new release
pr:dependencies	Updating a dependency
pr:phc_dependencies	Updating purchases-hybrid-common dependency
pr:changelog_ignore	The PR will not be included in the changelog. This label doesn't determine the type of bump of the version and must be combined with pr:feat, pr:fix or pr:other.

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