File sizes in download dialog wrong for Flatpak

[mdpenguin]

Describe the bug
The total of the numbers in the Size column does not match the total numbers in the download dialog when downloading Flatpak updates. The amount downloaded exceeds the total amount to be downloaded, but the progress bar seems to be based on yet another calculated total.

Screenshots

To Reproduce

1. Process updates for Flatpaks in Update Manager
2. Note that download dialog does not match total of size column

Expected behavior
Numbers displayed in the Size column should be reflected in the total amount to download in the download dialog

Distribution:

• Linux Mint
• LMDE
• Other (please specify)

Software version:
6.0.9