feat: use queryReactions to fetch and show reactions in OverlayReactions.

[khushal87]

🎯 Goal

This PR focuses on using the client.queryReactions API to show reactions in the OverlayReactions instead of what was used before(message.latest_reactions). Optimistic fetching of reactions from local DB is present and is also handled in the PR.

Note: The reactions type could have been ReactionsResponse and that would make the code much cleaner but sadly that would be a breaking change so the response from the API is mapped to the existing Reaction type.

Also, this PR is to be reviewed and merged once #2523 is merged.

🛠 Implementation details

🎨 UI Changes

iOS

Before	After

Android

Before	After

🧪 Testing

☑️ Checklist

• [ ] I have signed the Stream CLA (required)
• [ ] PR targets the develop branch
• [ ] Documentation is updated
• [ ] New code is tested in main example apps, including all possible scenarios
  • [ ] SampleApp iOS and Android
  • [ ] Expo iOS and Android