[2.0.26] Error message when setting maximum logistic request to zero

[Thadrax]

On a space platform, if you set the maximum request amount to zero (by dragging the slider) and have a manually changed minimum amount, you get an error message that the minimum amount can't be lower than the maximum amount.

1. Go to a space platform. Set a new logistic request (for example efficiency modules 1). Set the minimum amount to a custom level lower than the default (eg. 5). Accept the dialog. Now go and change the amounts by dragging the maximum slider to 0, both text fields for min and max show 0 now.
2. If you try to confirm the dialog, you get the following error message: "Min (5) must be <= max(0)." and the changes will be reverted.
3. Both amounts in the textboxes where 0, so it should set the request to min: 0 and max: 0.
4. Bug seems to only occur on space platforms and only if the minimum amount was adjusted manually to a value lower than the default (1 stack).

https://drive.google.com/file/d/16RqfR2 ... drive_link