[UI] Don't show sync-save progress in a electron dialog. Show it instead in a scrollable React Dialog like Winetricks Progress.

[Nocccer]

Problem description

People on steam deck can't see the full sync-save progress and can't get to the error message, because electron dialog is not scrollable.

Feature description

Use our react Dialog component instead, like we use now for winetricks progress. We can then make the log progress scrollable via css.

Alternatives

No response

Additional information

No response