error of num_images_per_prompt in the flux pipeline #9215
Description
in the _get_clip_prompt_embeds in flux pipeline, it is:
`
prompt_embeds = self.text_encoder(text_input_ids.to(device), output_hidden_states=False)
# Use pooled output of CLIPTextModel
prompt_embeds = prompt_embeds.pooler_output
prompt_embeds = prompt_embeds.to(dtype=self.text_encoder.dtype, device=device)
# duplicate text embeddings for each generation per prompt, using mps friendly method
prompt_embeds = prompt_embeds.repeat(1, num_images_per_prompt, 1)
prompt_embeds = prompt_embeds.view(batch_size * num_images_per_prompt, -1)
`
prompt_embeds should repeated interleavely on batch, but as a 2d tensor, prompt_embeds here will finally be repeated but not interleavely, which is not corretlly.