Handle updated activities on StoriesFeedUpdated

[gpunto]

Goal

The stories updated event now contain activities in addition to aggregated activities, so we should handle those too as pointed out in #134 (comment).

Implementation

Update activities in the story feed based on the ones that come in the event

Testing

The demo displays aggregated activities, so it's not easy to test it there. One would need to change the demo to show stories from activities instead.

Checklist

• Issue linked (if any)
• Tests/docs updated
• I have signed the Stream CLA (required for external contributors)

[github-actions]

PR checklist ✅

All required conditions are satisfied:

• Title length is OK (or ignored by label).
• At least one pr: label exists.
• Sections ### Goal, ### Implementation, and ### Testing are filled.

🎉 Great job! This PR is ready for review.

[Copilot]

Pull Request Overview

This PR adds support for updating individual activities in addition to aggregated activities when a StoriesFeedUpdated event is received. The StoriesFeedUpdatedEvent network model already contained an activities field, but it was not being processed or passed through the state management system.

Key changes:

• Added activities parameter to StoriesFeedUpdated state event and onStoriesFeedUpdated handler
• Implemented updateActivities helper function to merge activity updates
• Updated tests to verify both activities and aggregated activities are properly updated

Reviewed Changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
StateUpdateEvent.kt	Added activities field to StoriesFeedUpdated event and mapped it from the WebSocket event
FeedStateImpl.kt	Added updateActivities helper function and updated onStoriesFeedUpdated to process both activities and aggregated activities
FeedEventHandler.kt	Updated handler to pass activities parameter when calling onStoriesFeedUpdated
FeedEventHandlerTest.kt	Updated test cases to include activities in StoriesFeedUpdated event creation
FeedStateImplTest.kt	Enhanced test to verify both activities and aggregated activities are updated correctly

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[github-actions]

SDK Size Comparison 📏

SDK	Before	After	Difference	Status
stream-feeds-android-client	2.36 MB	2.36 MB	0.00 MB	🟢

[sonarqubecloud]

Quality Gate passed

Issues
6 New issues
0 Accepted issues

Measures
0 Security Hotspots
92.0% Coverage on New Code
0.9% Duplication on New Code

See analysis details on SonarQube Cloud