(ui): enable the current activity of the sequencer if no data are required
Description
If an application allows two activities in a sequencer, with the first one creating data used by the second one, the signal 'dataRequired' will never be sent. So the second activity will be opened directly but the method 'enableActivity' will not be called. So the application can have the second activity opened while it isn't enabled.
Proposal
Call 'enableActivity' in the 'goTo' method.