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
(grafted from d4f63406e1fa8f07f6b98cd81fa54702c601f7ad)

--HG--
branch : 7.0

sao/src/view/tree.js

@@ -2591,6 +2591,10 @@
                 fields, false, false, true)) {
                 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();
             }