No activity shown when public downloads public shared file using public API

[paurakhsharma]

Description

When a public downloads a publicly shared file using the public api
i.e http://MqBb59prM9Y8i4U:@{base_url}/public.php/webdav -H "X-Requested-With:XMLHttpRequest" no activity is shown.

But when a public downloads the same shared file using the private api
i.e 'http://{base_url}/index.php/s/MqBb59prM9Y8i4U/download the activity is shown.

Steps to reproduce:

1. Create a public link share of a file
2. Access the file using the public API http://{share_token}:@{base_url}/public.php/webdav -H "X-Requested-With:XMLHttpRequest"
3. See that you could get the contents of file but the activity is not listed in the

Expected behaviour:
It should be listed in the activity list.

[paurakhsharma]

c.c @phil-davis @individual-it @PVince81