Vehicle: fix actuators page

[dakejahl]

Closes #11957

Before

qrc:/qml/ActuatorComponent.qml:206:33: QML Connections: Cannot assign to non-existent property "onHadFailureChanged"
qrc:/qml/ActuatorComponent.qml:36: TypeError: Cannot read property 'groups' of undefined
qrc:/qml/ActuatorComponent.qml:38: TypeError: Cannot read property 'title' of undefined
qrc:/qml/ActuatorComponent.qml:45: TypeError: Cannot read property 'helpUrl' of undefined
qrc:/qml/ActuatorComponent.qml:43: TypeError: Cannot read property 'helpUrl' of undefined
qrc:/qml/ActuatorComponent.qml:57: TypeError: Cannot read property 'groups' of undefined
qrc:/qml/ActuatorComponent.qml:69: TypeError: Cannot read property 'groups' of undefined
qrc:/qml/ActuatorComponent.qml:162:21: Unable to assign [undefined] to bool
qrc:/qml/ActuatorComponent.qml:196: TypeError: Cannot read property 'actuators' of undefined
qrc:/qml/ActuatorComponent.qml:201: TypeError: Cannot read property 'actuators' of undefined
qrc:/qml/ActuatorComponent.qml:205: TypeError: Cannot read property 'hadFailure' of undefined
qrc:/qml/ActuatorComponent.qml:207:37: Unable to assign [undefined] to QObject*
qrc:/qml/ActuatorComponent.qml:243: TypeError: Cannot read property 'allMotorsActuator' of undefined
qrc:/qml/ActuatorComponent.qml:266: TypeError: Cannot read property 'actuators' of undefined
qrc:/qml/ActuatorComponent.qml:284: TypeError: Cannot read property 'count' of undefined
qrc:/qml/ActuatorComponent.qml:327:21: Unable to assign [undefined] to bool
qrc:/qml/ActuatorComponent.qml:363:29: Unable to assign [undefined] to bool
qrc:/qml/ActuatorComponent.qml:370:33: Unable to assign [undefined] to bool
qrc:/qml/ActuatorComponent.qml:369: TypeError: Cannot read property 'groupsVisible' of undefined
qrc:/qml/ActuatorComponent.qml:385:37: Unable to assign [undefined] to QString
qrc:/qml/ActuatorComponent.qml:401:37: Unable to assign [undefined] to QString
qrc:/qml/ActuatorComponent.qml:406:33: Unable to assign [undefined] to bool
qrc:/qml/ActuatorComponent.qml:413:33: Unable to assign [undefined] to bool
qrc:/qml/ActuatorComponent.qml:425: TypeError: Cannot read property 'enableParam' of undefined
qrc:/qml/ActuatorComponent.qml:438: TypeError: Cannot read property 'subgroups' of undefined
qrc:/qml/ActuatorComponent.qml:520: TypeError: Cannot read property 'configParams' of undefined
qrc:/qml/ActuatorComponent.qml:534: TypeError: Cannot read property 'notes' of undefined