fix pixtral processor (#34486)
* fix pixtral processor
* test out full length batches + remove undue ValueError
* fix up processing
* fix tests
* fix
* last fixup
* style
* [run-slow] pixtral
* [run-slow] pixtral
* fix config key
* skip torchscript tests
* [run-slow] pixtral
* add missing key
* [run-slow] pixtral
* fix docs
* [run-slow] pixtral
* fix wrong url for integration test
* [run-slow] pixtral
* pixtralVisionModel does not have a lm head
* [run-slow] pixtral
