Ctrl+shift+space clears previous selection

See RT-34772 and RT-34425.

repeat {
CTRL+SHIFT+SPACE
CTRL+UP
} several times

I cannot select more than 2 items sequentially. But this combination shouldn't clear previous selection.

RULE ControlsAutomatedTestSuite/javafx/scene/control/test/tableview/TableViewSelectionTest/keyboardShortcutsSpaceTest Exception org.jemmy.TimeoutExpiredException: State 'javafx.scene.control.test.tableview.TestBaseCommon$11...' has not been reached in ... milliseconds

RULE ControlsAutomatedTestSuite/javafx/scene/control/test/treetable/TreeTableSelectionTest/keyboardShortcutsSpaceTest Exception org.jemmy.TimeoutExpiredException: State 'javafx.scene.control.test.tableview.TestBaseCommon$11...' has not been reached in ... milliseconds

RULE ControlsAutomatedTestSuite/javafx/scene/control/test/treeview/TreeViewSelectionTest/keyboardShortcutsSpaceTest Exception org.jemmy.TimeoutExpiredException: State 'javafx.scene.control.test.treeview.TreeViewCommonFunctionality$$Lambda$15/...' has not been reached in ... milliseconds