Fix cropping power sliders

[axu2]

For some reason, Qt creator will delete several lines from the .ui file after

• A better page number-crop algorithm with NumPy. (Manga) #709

was commited. This messed up the cropping power sliders. So this is putting it back to how it was originally.

@neyney10 The only UI change should have been changing the UI slider maximum from 2 to 3, do you remember how those extra changes snuck in there? It was probably a Qt6 version mismatch though. I need to enforce the version.

I fixed this file with a git checkout c35dd137eaca8f3e006f02d52f2167c4b3375dd9 gui/KCC.ui

[neyney10]

For some reason, Qt creator will delete several lines from the .ui file after

* [A better page number-crop algorithm with NumPy. (Manga) #709](https://github.com/ciromattia/kcc/pull/709)

was commited. This messed up the cropping power sliders. So this is putting it back to how it was originally.

@neyney10 The only UI change should have been changing the UI slider maximum from 2 to 3, do you remember how those extra changes snuck in there? It was probably a Qt6 version mismatch though. I need to enforce the version.

I fixed this file with a git checkout c35dd137eaca8f3e006f02d52f2167c4b3375dd9 gui/KCC.ui

Yes I noticed them too. i didn't understand why the width changed while I didn't make any width changes and it doesn't seem to display them any differently on my end, so I figured its okay. i assume it is because I used a newer version of Qt or something.