Show when graph has filter applied (when filter modal is closed)

Context

A user does not know if a filter has been applied, unless he select the filer button.

Proposal

Show that a filter is applied on the filter by:

1. changing the button colour (match to colour used when a facet is selected in the filter modal).
2. showing the number of facets selected in the filter button.

Design

See design in figma and copied below:

Implementation

Alternative approaches (if applicable)

Scheduling