Ensure that filter info is synchronized before capture.
Ensure that filter info is synchronized before capture. This sets the active filter wheel in camera ACTIVE_DEVICES so that the filter value can be properly snooped on and stored in the FITS header. Currently the default filter wheel (whatever that was explicitly set before using the filter wheel dropdown menu) is used. So if a different filter wheel is active, the synchronization does not happen upon capture. This MR fixes this issue