[TableView, TreeTableView] incorrect amount of dots when sorted state is marked

Run the attached code.

Note, that all 3 columns participate in sort order :

table.getSortOrder().addAll(firstNameCol, lastNameCol, emailCol);

but first is not sortable, so it isn't sort. And the second and the third columns have 2 and 3 dots about sort order correspondingly. I expect 1 and 2 dots.

Affected tests:
ControlsAutomatedTestSuite/javafx/scene/control/test/tableview/TableViewNewTest/columnSortablePropertyTest
ControlsAutomatedTestSuite/javafx/scene/control/test/treetable/TreeTableAsNewTableTest/columnSortablePropertyTest