Resume camera session after taking a video if "batch mode" is enabled.

This fixes an issue where camera would freeze and eventually crash
after taking a photo.

Signal/src/ViewControllers/Photos/PhotoCaptureViewController.swift

@@ -987,7 +987,9 @@ extension PhotoCaptureViewController: PhotoCaptureDelegate {
 
         updateDoneButtonAppearance()
 
-        if !isInBatchMode {
+        if isInBatchMode {
+            resumePhotoCapture()
+        } else {
             delegate?.photoCaptureViewControllerDidFinish(self)
         }
     }