Fix bert issue
Author: saswatmeher
Pull request: yes

# What does this PR do?
This PR fixes a bug that a user can encounter while using generate and models that use gradient_checkpointing.

Fixes issue #21737  for Bert.
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## Before submitting
- [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case).
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      to it if that's the case.(#21737)
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- [ ] Did you write any new necessary tests?


## Who can review?
@younesbelkada, @gante 

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Models:

- text models: @ArthurZucker and @younesbelkada
- vision models: @amyeroberts
- speech models: @sanchit-gandhi
- graph models: @clefourrier

Library:

- flax: @sanchit-gandhi
- generate: @gante
- pipelines: @Narsil
- tensorflow: @gante and @Rocketknight1
- tokenizers: @ArthurZucker
- trainer: @sgugger

Integrations:

- deepspeed: HF Trainer: @stas00, Accelerate: @pacman100
- ray/raytune: @richardliaw, @amogkam

Documentation: @sgugger, @stevhliu and @MKhalusova

HF projects:

- accelerate: [different repo](https://github.com/huggingface/accelerate)
- datasets: [different repo](https://github.com/huggingface/datasets)
- diffusers: [different repo](https://github.com/huggingface/diffusers)
- rust tokenizers: [different repo](https://github.com/huggingface/tokenizers)

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- PyTorch: @sgugger
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Comments:
_The documentation is not available anymore as the PR was closed or merged._

@younesbelkada or @gante, Can anyone of you please help me with the error I am getting after running fix-copies. Running fix-copies made changes to multiple files(19) and now I am getting tests_torch, tests_torch_and_tf error on it.

Hi @saswatmeher 
Thanks for the PR! 
I would probably try:
1- `pip install --upgrade -e .["quality"]` and then run `make fix-copies`
Let us know if this works!

@younesbelkada It worked. Thanks!