Windows Client: Sort by size incorrect

[throny]

Describe the bug

In the Local Activity table, sorting by file size works correctly.
However, in the Not Synchronized view, sorting by size is incorrect.

Instead of sorting by the actual file size, the entries appear to be sorted by the leading digit of the size value (e.g. 9x before 1xx), which results in an incorrect order.

Steps to reproduce

1. Sync with Windows Client
2. Switch to "not synchronized"
3. Sort by size

Expected behavior

Files are sorted correctly by their actual size

Actual behavior

Files are sorted incorrectly, seemingly based on the first digit of the size value

Additional context