Add In-Chat Message Search Bar in Message Screen

Introduce a native in-chat search functionality within the message screen of the UI Kit, allowing users to search messages directly inside an active conversation (similar to apps like WhatsApp). Currently, there is no built-in support for an integrated search bar within the message view, which limits usability and impacts the overall user experience. This feature should enable users to quickly search, navigate, and highlight messages within a conversation without leaving the chat screen. Providing this as a configurable UI Kit component or property would enhance usability, maintain UI consistency, and eliminate the need for custom implementations, thereby improving developer experience and end-user satisfaction.