Unstable seams in some live player panoramas

We have identified an issue with the new stitching infrastructure where the seam is being generated again per processing node even though this should be shared and persisted. This can cause the seam to move and flicker between images.

We are working to getting a shared cache working again for the seam configuration.

Original photos are unaffected and panoramas can be regenerated once we have a fix in place. During timelapse generation we always generated fresh panoramas from stabilized images, so they are never affected by live panorama issues.