This pull request refactors the channel message preview components to improve code modularity, maintainability, and UI consistency. The main changes involve extracting message preview logic into dedicated components, updating delivery status handling, and improving empty state indicator styling.

Component Refactoring and Consolidation

• Extracted message preview rendering logic from ChannelPreviewMessage into a new ChannelMessagePreview component, simplifying the parent component and improving reusability. [1] [2] [3] [4]
• Removed the legacy MessagePreview and MessagePreviewUserDetails components, consolidating their functionality into the new preview components. [1] [2]

Delivery Status Handling Improvements

• Renamed and refactored ChannelListMessageDeliveryStatus to ChannelMessagePreviewDeliveryStatus, updating its props and logic to work with the new message preview structure.
• Improved logic for displaying delivery status and sender name, especially in one-on-one channels and when the last message is not from the current user. [1] [2]
• Added new styling for displaying the sender's username in delivery status.

Empty State Indicator Styling

• Updated EmptyStateIndicator to use theme-based styles for thread empty states, ensuring consistent appearance across the app. [1] [2] [3] [4]

These changes collectively improve the maintainability of the codebase and the user experience by making the message preview and delivery status components more modular and visually consistent.