[1.1.68] Production window sizing breaks on UI scale change

[curiosity]

To reproduce:
1. Open the production window (also works on the electric network info window).
2. Increase UI scale.
3. Decrease UI scale.

Observed: there is now an empty space to the right of each graph.

Expected: the window looks identical to before UI scale change.

[boskid]

Thanks for the report. This is quite minor issue. It works fine in 1.2 so i am considering this to be fixed for 1.2