Update pipeline_flux_inpaint.py to fix padding_mask_crop returning only the inpainted area

[Meatfucker]

What does this PR do?

This fixes pipeline_flux_inpaint.py to appropriately return the entire finished image instead of just the inpainted area when padding_mask_crop is used.

Fixes # (issue)

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@yiyixuxu
@asomoza

[HuggingFaceDocBuilderDev]

The docs for this PR live here. All of your documentation changes will be reflected on that endpoint. The docs are available until 30 days after the last update.

[asomoza]

@bot /style

[github-actions]

Style fixes have been applied. View the workflow run here.

[asomoza]

thanks!