fix: Handle cases where local session storage is not available

[alexs-mparticle]

Summary

• Handles cases where local session storage is not available
• Exits processEvents early if there is no placementEventsMappingLookup to avoid computing hashes for matching mapped events.

Testing Plan

• Using a sample app, remove getLocalSessionAttributes from the mParticle.Rokt namespace to verify an error is not thrown.

[Copilot]

Pull Request Overview

This PR adds defensive handling for cases where the getLocalSessionAttributes function is not available on the window.mParticle.Rokt namespace, preventing runtime errors when this optional dependency is missing.

Key changes:

• Extracts local session attribute retrieval into a safe wrapper function with null checks
• Adds an isEmpty utility function to check for empty values
• Includes comprehensive test coverage for the missing function scenario

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
src/Rokt-Kit.js	Adds defensive programming with safe wrapper function and empty value checking
test/src/tests.js	Adds test case to verify no errors are thrown when getLocalSessionAttributes is unavailable

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