bindableproperties is the actual project, not a subdirectory with
separate examples. It should use qt_internal_add_example.
Pick-to: 6.6
Task-number: QTBUG-90820
Task-number: QTBUG-123096
Change-Id: I409d20e035956e6c236f84721b3c6882893cd547
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>
(cherry picked from commit a2e0f3dfbd9f54e20221dbc04360f838b5fa5343)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>
651c0fd223