Activity. No activity for copying a zero byte file

## Describe the bug
Response message for copying file to a folder is not given when listing activities of the destination file and destination folder.

## Steps to reproduce
1. Upload zero byte file `zerobyte.txt`.
2. Create a folder `FOLDER`
3. Copy file `zerobyte.txt` to folder `FOLDER`
4. Check activities of both destination file `FOLDER/zerobyte.txt` and destination folder `FOLDER`.

## Expected behavior
Expected to get response for copying the file.

## Actual behavior
#### For activities of destination file `FOLDER/zerobyte.txt`
``` yml
{
"value": []
}
```

#### And for activities of destination folder `FOLDER`
- only activity for creation of FOLDER is given but not the file copy activity.

Reproduce the copy of a zero-byte file into a folder, then inspect the activity listings for both FOLDER/zerobyte.txt and FOLDER. Trace the copy and activity-handling entry points from there; done means both destination resources report the file-copy activity.

Written by the indexing model from the issue text.