fix: [SDK-5191] correct lock screen visibility type

[fadi-george]

Description

One Line Summary

Correct the Android lockScreenVisibility notification property from string to number.

Details

Motivation

The native Android SDK provides lock screen visibility as a numeric value. The React Native type incorrectly declared it as a string, causing the public notification model to disagree with the runtime value.

Scope

Updates the Android notification data interface and public OSNotification property type. No notification processing or behavior changes.

Testing

Unit testing

Updated the OSNotification mapping test to verify the numeric value. vp test passes.

Manual testing

Not performed because this is a type correction with existing unit coverage and no runtime behavior change. vp check passes.

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