UI bug -> sizes in GB instead of GiB

[m1ci]

In the UI the databus is showing the size of the files/versions, etc.

The size displayed is in GiB (binary), but the UI shows the size in GB (decimal).
This might confuse people.

Required fix: Update either the UI to show GiB instead of GB, or update the computation to be decimal instead of binary.

[palakbhati]

Hi @m1ci, I'd like to work on this issue if it's still open. Could you please assign it to me?

I'll go with relabeling the units to GiB (KiB/MiB/GiB) in the UI rather than changing the underlying computation, since that's the more accurate fix without altering any existing values — let me know if you'd prefer the decimal (GB) approach instead before I start.