I can't tell for sure from your picture but the wheel looks like it might possibly be straight in the dropouts but dishing pulls it too far to one side. I had the same situation with a front hub motor wheel. Besides placing the anti turn washers to space it as advantageously as possible I adjusted the spokes to pull the rim to a centered position. It didn't take much re-dishing to make a big difference. If the original wheel was centered it seems unlikely that there would be an issue with the fork/dropouts itself