What type of widget does NOT display in the Rapid Response mobile client?

The message widget does not display in the Rapid Response mobile client because this specific application is designed for visualization and analysis of data, primarily through graphical representations. The mobile client focuses on delivering concise and clear information that can be easily interpreted on smaller screens, which typically involves charts, maps, or text that emphasizes interactive data or visual analytics.

Widgets like tree map, worksheet chart, and text widgets are designed to present data in a way that is suitable for quick comprehension, making them appropriate for mobile users who need to access insights on the go. The tree map widget allows users to visualize hierarchies in their data, the worksheet chart widget presents trends and values in a graphical format, and the text widget provides necessary context or information. In contrast, the message widget is typically used for communications or notifications, which may not align with the primary goal of data visualization within the mobile interface. Thus, it is excluded from the Rapid Response mobile client.