Fix tokenizer export for LLamaTokenizerFast

[mayank31398]

What does this PR do?

Currently, LLamaTokenizerFast is not exporting add_bos_token and add_eos_token. This will fix this issue.

Fixes # (issue)
#23833
#23855 (comment)

this is not saving add_eos_token and add_bos_token.
@sgugger @ArthurZucker Can you guys take a look at this?

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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• Did you write any new necessary tests?

Who can review?

• @ArthurZucker @sgugger

[amyeroberts]

Thanks for fixing!

[amyeroberts]

@mayank31398 Could you add the same fix to code llama's fast tokenizer?

[mayank31398]

done @amyeroberts

[HuggingFaceDocBuilderDev]

The docs for this PR live here. All of your documentation changes will be reflected on that endpoint.

[mayank31398]

@amyeroberts can you merge this?
this is blocking us :)

[ArthurZucker]

Looks good to me, thanks 😉