Hello,
A feature that display the values from the table rows in the dimension selection of the table chart.
To help you out, here's an example:

No need to have a specific calculated dimension. The measure can have a dynamic calculation.
This can help users to search values that are only shown in the table chart.
I know it goes against the selection mechanic. From a client's view, he wants to select values only shown on the table chart.
This feature can be on the dimension setting of the table chart. It could be a check box to activate this feature.
Regards,
Théo