For qwen-image training file, Maybe "shuffle" of dataloader should be "False" when custom_instance_prompts is not None and cache_latents is False?

### Describe the bug

I think "shuffle" of dataloader should be "False" when custom_instance_prompts is not None and cache_latents is False. Otherwise, it will lead to errors in the correspondence between prompt embedding and image during training, and prompt will not be followed when performing the task of T2I.

### Reproduction

None

### Logs

```shell

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### System Info

None

### Who can help?

_No response_

Locate the qwen-image training entry point and its dataloader, then trace how custom_instance_prompts and cache_latents affect sample ordering. Reproduce the reported condition if possible and verify that each image remains paired with its intended prompt when cache_latents is false; add or update regression coverage if the project has a relevant test.

Scritto dal modello di indicizzazione a partire dal testo della issue.