Check for latents, before calling prepare_latents - sdxlImg2Img

[nileshkokane01]

What does this PR do?

Fixes #7011

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 make sure to update the documentation with your changes? Here are the documentation guidelines, and here are tips on formatting docstrings.
• [ ] Did you write any new necessary tests?

Who can review?

@sayakpaul @yiyixuxu

Anyone in the community is free to review the PR once the tests have passed. Feel free to tag members/contributors who may be interested in your PR.

[yiyixuxu]

should we make this consistent for all img2img pipeline then? cc @sayakpaul

[HuggingFaceDocBuilderDev]

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[nileshkokane01]

Perhaps, as all suffer the same thing! Let me know, I'll modify it for all img2img pipelines.

[sayakpaul]

should we make this consistent for all img2img pipeline then?

Yeah works for me.

[nileshkokane01]

@yiyixuxu , can you have a look or list some files that I missed to update?

[yiyixuxu]

@nileshkokane01 can you look into the test failure? seem relevant here

[nileshkokane01]

@yiyixuxu can you please check now ?
BTW, why aren't the test running automatically as we push the changes , as it happens for the transformers library?

[yiyixuxu]

thank you:) @nileshkokane01