[4034] Fix own reactions

[bychkovdmitry]

🎯 Goal

Closes #4034

Reaction of the current user are lost and turn grey.

🛠 Implementation details

Ensured that we don't lose own reactions when a new reaction event arrives.

🎨 UI Changes

Before	After

🧪 Testing

Add, delete and modify reactions. Ensure that they have the correct tint.

☑️Contributor Checklist

General

• [x] I have signed the Stream CLA (required)
• [x] Assigned a person / code owner group (required)
• [x] Thread with the PR link started in a respective Slack channel (#android-chat-core or #android-chat-ui) (required)
• [x] PR targets the develop branch
• [x] PR is linked to the GitHub issue it resolves

Code & documentation

• [x] Changelog is updated with client-facing changes
• [ ] New code is covered by unit tests
• [x] Comparison screenshots added for visual changes
• [ ] Affected documentation updated (KDocs, docusaurus, tutorial)

☑️Reviewer Checklist

• [ ] UI Components sample runs & works
• [ ] Compose sample runs & works
• [ ] UI Changes correct (before & after images)
• [ ] Bugs validated (bugfixes)
• [ ] New feature tested and works
• [ ] Release notes and docs clearly describe changes
• [ ] All code we touched has new or updated KDocs