Revert ListChangeAggregator newIndexPath on Updates

[nuno-vieira]

🔗 Issue Links

None

🎯 Goal

Switching the ListChangeAggregator to the newIndexPath caused multiple crashes. In Apple documentation, they use the oldIndexPath, so this PR reverts that change and also stops checking for conflicts between Inserts and Updates to avoid unnecessary reload data.

📝 Summary

• Reverts the ListChangeAggregator Update IndexPath. Switches back to the oldIndexPath.
• Don't treat Insert<->Updates has conflicts in ListChangeIndexPathResolver

☑️ Contributor Checklist

• I have signed the Stream CLA (required)
• Changelog is updated with client-facing changes
• New code is covered by unit tests
• This change follows zero ⚠️ policy (required)
• Comparison screenshots added for visual changes
• Affected documentation updated (docusaurus, tutorial, CMS)

[sonarcloud]

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0 Bugs
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55.6% Coverage
0.0% Duplication