Save the record when checkbox is clicked on editable tree view

Since 53ff6c9d8393 checkbox can be toggled even if the record is not the
currently selected record.
When the changed record is not the currently edited record, it must be saved as
editable tree handler will not save it.

Closes #14642

sao/src/view/tree.js

@@ -2787,6 +2787,10 @@
                 fields, false, false)) {
                 var value = cell.prop('checked');
                 this.field.set_client(record, value);
+                if (record !== current_record) {
+                    // we can not rely on editable tree handler to save the row
+                    record.save();
+                }
             } else {
                 evt.preventDefault();
             }