Provide a way to circumvent UI state that depends on expressions

Some parts of the UI may be displayed dependent on a expression, like datasource statistics, which rely on the statistics-enabled attribute of a given datasource.

But this attribute's purpose is to tell the server to keep track of these statistics and not to inform the user if they are enabled. A read operation performed on the given resource will include the statistics if they are enabled so we can instead display the components based on whether or not the statistics are present.

For datasource this is trivial to check, I will investigate other components that also report statistics.