Fix Center Crop error with Tensorflow

[hahahannes]

The center cropping raises currently an Exception with Tensorflow backend and CNN transformations activated.
https://github.com/ViCCo-Group/THINGSvision/blob/master/thingsvision/model_class.py#L317

The crop width 224 should not be greater than input width.
Condition x >= 0 did not hold element-wise:
x (shape=() dtype=int32) = 
-221

[LukasMut]

@hahahannes is this still an open issue?

[LukasMut]

@hahahannes?

[hahahannes]

This was caused by this line: https://github.com/ViCCo-Group/THINGSvision/blob/4bbcb817333cc0e635b3b585e66717e99243721a/thingsvision/core/extraction/mixin.py#L147

But I am not sure whether this still raises an exception.

[LukasMut]

@hahahannes could you please check whether this is still an issue?

[LukasMut]

@andropar, could you take over and see whether this is still an open issue, and if so how to fix it?