Show download size in tooltip

[Biep]

With 1.8.0, the size of images and files is no longer shown. Yet, this information is important for people with limited data when deciding whether to download or not.

[dbkr]

We have this for files though? So I think this make this a dup of #18197 ?

[kittykat]

Closing as this issue is one of the items covered by #18197