Feature Request

Controls currently are filtered by the Dashboard Context, and by selections made in previous controls. There is no other way for a dashboard author to narrow down the available options.

There are many use-cases in which a field has many values, but only a certain subset of those values are relevant to the dashboard.

Fix

In the editor for Data Controls, we should add a selection that allows authors to Narrow down available selections. This should take a form similar to a compressed unified search bar where an author can use filter pills and/or a KQL query bar to specify one or more filters which are always applied to search queries run by the control. These should be appended to any filters added by the dashboard or by previous controls.

Needs design @andreadelrio