[Bug] Ignore Live Activities code for Mac Catalyst

[jennantilla]

Description

One Line Summary

Fix Mac Catalyst builds by ignoring offending Live Activities code.

Details

• We fixed Mac Catalyst Live Activities build issues in native SDK OneSignalLiveActivities framework included for mac catalyst OneSignal-iOS-SDK#1446
• However, this wrapper SDK has code that reference OneSignalLiveActivitiesManagerImpl directly which is in a module not available to Mac Catalyst due to ActivityKit dependency
• Therefore, it caused build failures for Mac Catalyst.
• Live Activities does not work for Mac anyway, so just ignore these methods.

Motivation

Fix builds, address followup report here OneSignal/OneSignal-iOS-SDK#1445.

Scope

• No op Live Activities for Mac Catalyst

Testing

Unit testing

None

Manual testing

Tested on my Mac Catalyst - builds, Live Activities is no-op
Tested on iPhone - builds, Live Activities setup is done

Affected code checklist

• Notifications
  • Display
  • Open
  • Push Processing
  • Confirm Deliveries
• Outcomes
• Sessions
• In-App Messaging
• REST API requests
• Public API changes

Checklist

Overview

• I have filled out all REQUIRED sections above
• PR does one thing
• Any Public API changes are explained in the PR details and conform to existing APIs

Testing

• I have included test coverage for these changes, or explained why they are not needed
• All automated tests pass, or I explained why that is not possible
• I have personally tested this on my device, or explained why that is not possible

Final pass

• Code is as readable as possible.
• I have reviewed this PR myself, ensuring it meets each checklist item

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