FIX: do not stop `fix_missing_s3` task if saving an upload failed (#13658)

This commit logs an error and moves to next upload when saving a single
upload record fails when running `uploads:fix_missing_s3` task.

lib/tasks/uploads.rake

@@ -1038,8 +1038,9 @@ def fix_missing_s3
         # we do not fix sha, it may be wrong for arbitrary reasons, if we correct it
         # we may end up breaking posts
         upload.assign_attributes(etag: fixed_upload.etag, url: fixed_upload.url, verification_status: Upload.verification_statuses[:unchecked])
-        upload.save!(validate: false)
+        saved = upload.save(validate: false)
 
+        if saved
           OptimizedImage.where(upload_id: upload.id).destroy_all
           rebake_ids = PostUpload.where(upload_id: upload.id).pluck(:post_id)
 
@@ -1049,6 +1050,9 @@ def fix_missing_s3
               post.rebake!
             end
           end
+        else
+          puts "Failed to save upload #{saved.errors.full_messages}"
+        end
       end
     end
   end