Patch rag tf generate
# What does this PR do?
Patches the failing tests on `main`. After merging #21324, which added support for `logits_processor` in TF framework. 
Just need to rebase<|||||>Oups seems that this is to prehemptive! This will be for the tf timestamps PR #21334 <|||||>The docs for this PR live [here](https://moon-ci-docs.huggingface.co/docs/transformers/pr_21356). All of your documentation changes will be reflected on that endpoint.