Fix UDOP dtype issue (#34180)
* Trigger UDOP tests
* Try forcing dtype in LayoutLMV3
* Do checks to see where uint8 is getting in
* Do checks to see where uint8 is getting in
* Found it!
* Add .astype(np.float32)
* Remove forced check, make fixup
* Checking where exactly the uint8 creeps in
* More checking on the uint8 issues
* Manually upcast in rescale()
* Remove UDOP trigger
