Autofocus disturbing meridian flip corrected

Summary: This patch corrects a bug in the communication between the Focus module and the Capture module. If the Capture module requests the meridian flip to wait until a capture is completed AND after this capture a re-focus is triggered, all further state changes of the Focus module are ignored.

Test Plan: Place the mount close before the meridian and create a capture set that requests a re-focus every minute. When passing the meridian, the mount should execute the meridian flip as soon as capturing and re-focusing is completed.

Reviewers: mutlaqja, TallFurryMan

Reviewed By: mutlaqja

Subscribers: kde-edu

Tags: KDE Edu

Differential Revision: https://phabricator.kde.org/D22583