The "isFromClient" flag always false when selection mode is multi

[krissvaa]

If SelectionGrid is set as a multi-select and then the user selects some rows - the selectionListener should be receiving events as from the client, but in this case it is false.

Example:

var grid = new SelectionGrid<String>();
grid.setSelectionMode(Grid.SelectionMode.MULTI);
grid.addSelectionListener(event -> {
			if (event.isFromClient()) { //always false
				onSelectionChanged(); //never executed
			}
		});

Problem seems to be when calling the selectRangeOnly method in this line:

selection-grid-flow/selection-grid-flow/src/main/java/com/vaadin/componentfactory/selectiongrid/SelectionGrid.java

Line 198 in 59dde41

asMultiSelect().updateSelection(newSelectedItems, oldSelectedItems);

Vaadin 23.3.0

[askpythia]

Hi, we at Generali also would need a fix for this Bug soon, we use the SelectionGrid/Tree at many places!